ROBERT DECOTIIS VS. DR. HARMON STEIN (L-1139-14, MONMOUTH COUNTY AND STATEWIDE) ( 2019 )


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  •                                 NOT FOR PUBLICATION WITHOUT THE
    APPROVAL OF THE APPELLATE DIVISION
    This opinion shall not "constitute precedent or be binding upon any court." Although it is posted on the
    internet, this opinion is binding only on the parties in the case and its use in other cases is limited. R. 1:36-3.
    SUPERIOR COURT OF NEW JERSEY
    APPELLATE DIVISION
    DOCKET NO. A-3790-17T4
    ROBERT DECOTIIS and
    STEPHANIE DECOTIIS,
    Plaintiffs-Respondents,
    v.
    DR. HARMON STEIN, and
    CAMPUS EYE GROUP &
    LASER CENTER,
    Defendants,
    and
    DR. BRIAN COHEN,
    Defendant-Appellant.
    ______________________________
    Argued September 9, 2019 – Decided September 30, 2019
    Before Judges Sumners, Geiger and Natali.
    On appeal from the Superior Court of New Jersey, Law
    Division, Monmouth County, Docket No. L-1139-14.
    Robert Thomas Gunning argued the cause for appellant
    (Morrison Mahoney LLP, attorneys; Robert Thomas
    Gunning, of counsel and on the briefs; Lina P.
    Corriston, on the brief).
    Robert G. Hicks argued the cause for respondents
    (Javerbaum Wurgaft Hicks Kahn Wikstrom & Sinins,
    attorneys; Robert G. Hicks, on the brief).
    PER CURIAM
    In this medical malpractice action, plaintiff Robert DeCotiis asserted
    negligence claims against defendants Brian Cohen, O.D., and Harmon Stein,
    M.D., arising out of complications caused by lasik eye surgery.1 Immediately
    before trial, plaintiff dismissed his claims against Dr. Stein.           The jury
    subsequently awarded plaintiff $483,500 as compensatory damages against Dr.
    Cohen, as the sole remaining defendant.2 On appeal, Dr. Cohen argues that the
    trial court erred in denying his motions: 1) to dismiss plaintiff's lack of informed
    consent claim; 2) to bar the "personal opinions" of plaintiff's ophthalmology
    1
    "Lasik is an acronym for laser assisted keratomileusis in situ." New Jersey
    Eye Center, P.A., v. Princeton Ins. Co., 
    394 N.J. Super. 557
    , 561 n.1 (App. Div.
    2007).
    2
    Plaintiff dismissed his claims against Campus Eye Group & Laser Center
    (Campus) by stipulation. Plaintiff's wife, Stephanie DeCotiis, voluntarily
    dismissed her per quod claim.
    A-3790-17T4
    2
    expert, Michael E. Sulewski, M.D.; and 3) for an involuntary dismissal, under
    Rule 4:37-2(b). We affirm.
    I.
    Plaintiff scheduled a consultation at Campus to be evaluated for lasik eye
    surgery. At that initial visit, plaintiff completed "standard medical forms," and
    a medical assistant "took some measurements of [his] eyes" before advising him
    that he was "a good patient based on the information that she had." Plaintiff
    then scheduled a "pre-operative follow up" exam on April 5, 2012, and surgery
    with Dr. Stein for April 16, 2012, to be performed at Campus.
    The April 5, 2012 pre-operative appointment was the first time that
    plaintiff met Dr. Cohen, a licensed optometrist. In describing his relationship
    with Campus, Dr. Cohen alternatively referred to himself as an "independent
    optometrist," "staff optometrist," and "independent contract[or]." He explained
    that one of his duties at Campus was to "collect the data for" Dr. Stein. During
    the April 5 exam, Dr. Cohen measured plaintiff's pupil size at 6.5 millimeters in
    diameter in "mesopic conditions," which was described by Dr. Cohen to mean
    "dim light illumination."
    According to plaintiff, he explained to Dr. Cohen that "about [ten] years
    prior" to his visit he had a "corneal ulcer, basically . . . a tiny hole in [his]
    A-3790-17T4
    3
    cornea," which "fully healed" and did not affect his vision, but he disclosed it to
    Dr. Cohen in case any residual scarring would make him a poor candidate for
    lasik surgery. Plaintiff "specifically remember[ed] asking Dr. Cohen if that was
    okay and remember[ed] him indicating to [plaintiff] that it was not going to be
    an issue and that [plaintiff] was a good candidate for the surgery."
    After Dr. Cohen took his measurements, plaintiff received pupil-dilating
    eye drops, and one of Dr. Cohen's assistants measured the topography of
    plaintiff's corneas with a Zeiss Topographer, which measured the diameter of
    plaintiff's pupils at approximately eight millimeters in each eye in "scotopic "
    illumination, described by Dr. Sulewski during trial to mean "very, very dim" or
    "dark" illumination. Before the day of his lasik surgery, plaintiff received a
    consent form.
    The consent form disclosed that individuals who have "large pupils
    (greater than [seven] millimeters) in dim light conditions may experience nigh t
    vision difficulties such as halos around lights, glare, and ghosting." Plaintiff
    read the form and was "aware . . . there were certain risks including a potential
    for night vision problems, such as halos, starburst, and the like," but did not have
    any questions because he "figured that if there was anything that put [him] out
    of the ordinary other than [his] corneal ulcer that it would have been brought up
    A-3790-17T4
    4
    to [him] prior to the surgery." Thus, according to plaintiff, he did not "have any
    reason to think [he was] at an increased risk over any other patient" of incurring
    the disclosed symptoms.
    Plaintiff signed the consent form on April 16, 2012, the day of his surgery.
    Dr. Stein testified that he has worked with Dr. Cohen for at least twenty years,
    and that he "rel[ies] upon" the "pre-operative testing [that] is provided to [him]."
    Dr. Stein did not "conduct any testing" himself, and further stated that in 2012,
    pupil size was "[i]rrelevant" to him because the lasers are sufficiently advanced,
    but acknowledged that the pupil size "has to be programmed in so the computer
    knows . . . how to treat the eye." Dr. Stein also compared pupil size to a patient's
    date of birth. In other words, the data is entered for the sake of completion.
    Two months after the surgery, plaintiff became "concerned" because he
    was experiencing night vision issues. As plaintiff explained:
    primarily the most debilitating of the night vision issues
    was the starburst thing. Essentially, when I'm in a dark
    location any point of light that I see is spread out in all
    directions with like lines coming out of it. In addition
    to that I have double vision/ghosting in my . . . eyes. So
    when I look at something, instead of just seeing one
    copy of that, I see slightly down and to the right,
    another copy and slightly up and to the left, another
    copy. They're not as opaque as the actual object that
    I'm looking at but it's – it's very, it's – it's bad.
    A-3790-17T4
    5
    Plaintiff visited Dr. Cohen on June 28, 2012 for a follow-up examination,
    and Dr. Cohen noticed there were some "wrinkles in the flap," or top layer of
    tissue on his eye, that was cut open and placed back down on his eye with a "sort
    of squeegee" at the end of the surgery. Dr. Stein thereafter "performed a flap
    lift procedure" that day "where he lifted the lasik flaps [and] laid . . . and
    squeegeed them back down." Plaintiff explained that the flap lift procedure did
    not help much, but Dr. Cohen provided him with a trial bottle of Alphagan, a
    side effect of which is to "constrict[] the pupil," which "greatly reduced
    [plaintiff's] night vision issues."
    The next time plaintiff met with Dr. Cohen was in December 2012.
    Plaintiff was still experiencing night vision problems, and, according to
    plaintiff, at that visit Dr. Cohen "agreed with [plaintiff] that [his] pupil size may
    [have been] causing the night vision issues." Dr. Cohen denied ever telling
    plaintiff at any visit that he had large pupils.
    Plaintiff's "debilitating" night vision issues continued, despite attempts by
    a second physician to remedy the problem. He filed suit alleging that Dr. Cohen
    and Dr. Stein "negligently and carelessly examine[d] and/or treat[ed] [p]laintiff
    so as to leave [him] with impaired vision." According to plaintiff's testimony at
    trial, he would not have signed the consent form, and proceeded with the lasik
    A-3790-17T4
    6
    surgery, if Dr. Cohen informed him that his large pupil size increased his risk of
    experiencing night vision complications.
    Dr. Cohen filed a motion for summary judgment under Rule 4:46-2,
    claiming that he did not have a duty to obtain plaintiff's informed consent since
    he was not the operating surgeon, but instead was akin to a referring physician
    to whom a duty does not apply. See Herrara v. Atlantic Surgical Group, P.A.,
    
    277 N.J. Super. 260
    , 268-70 (Law Div. 1994). Dr. Cohen also argued that he
    correctly measured plaintiff's pupils in accordance with the manual for the laser
    machine that Dr. Stein used to perform the lasik surgery, which, according to
    Dr. Cohen, established the applicable standard of care.
    Distinguishing Herrara, the motion judge in a comprehensive written
    opinion determined that Dr. Cohen "was not a referring physician or
    recommending physician as were the practitioners in the Herr[a]ra case . . . ."
    Instead, the court noted "Dr. Cohen took a variety of pre-operative
    measurements which determined whether candidates were suitable for the
    surgery." The court also concluded disputed issues of fact existed as to whether
    Dr. Cohen negligently measured plaintiff's pupils, and denied summary
    judgment.
    A-3790-17T4
    7
    Immediately before trial, Dr. Cohen again moved "in limine" to dismiss
    plaintiff's informed consent claim. The trial judge denied the motion concluding
    the motion judge's decision on the issue was the law of the case and also
    concluded factual questions existed regarding Dr. Cohen's role as a referring
    physician and, specifically, if he acted in concert with Dr. Stein.
    Dr. Cohen also moved in limine to bar Dr. Sulewski from testifying on the
    standard of care for measuring a patient's pupils prior to lasik eye surgery. After
    hearing oral arguments, the trial judge concluded that under our holding in
    Seoung Ouk Cho v. Trinitas Regional Medical Center, 
    443 N.J. Super. 461
    , 471-
    72 (App. Div. 2015), the motion should have been made in accordance with the
    rules governing motions for summary judgment, and thus was procedurally
    improper. Despite this procedural deficiency, the court nevertheless scheduled
    a Rule 104 hearing, see N.J.R.E. 104(a), because the judge "believe[d] that [Dr.
    Sulewski's] opinion is somewhat shaky, shall I say, in terms of what standard he
    relies on."
    At the Rule 104 hearing, Dr. Sulewski testified that his "training with
    respect to measuring pupil size" began "during [his] residency and [his]
    [f]ellowship at [Johns] Hopkins," and that "through the entire evolution of
    refractive surgery in the early days up until now[,] . . . pupil size is something
    A-3790-17T4
    8
    that everyone measures before refractive surgery and really what we're trying to
    determine is [whether] patient[s] [are] going to have problems at night."
    Dr. Sulewski further testified "that the standard of care is, prior to
    refractive surgery, pupil size is measured in . . . relatively dark conditions." He
    explained that "you gotta be able to see the patient to measure the pupil," so
    there must be "enough illumination around the eye that you can actually measure
    the pupil size and that's how it's done." Dr. Sulewski stated that in his opinion,
    the standard of care is to dim the lights down to "pretty much lights out, ve ry
    dark," which is "the opinion of what we teach at the University of Pennsylvania,"
    and that he "believe[d] that's what most people do," that his opinion is "shared
    by others around the country," and "that's the way it is."
    When defense counsel questioned Dr. Sulewski about an excerpt from "the
    WaveLight [m]anual," a manual issued by the manufacturer of the laser that Dr.
    Stein used to perform the lasik surgery, Dr. Sulewski acknowledged that the
    manual's precautions section states that pupil size "should be evaluated under
    mesopic illumination conditions." Dr. Sulewski also testified that "[m]esopic is
    dim illumination," and that "the term scotopic is dark . . . light conditions," but
    also that "[s]cotopic is very, very dim, enough that there is light in the room that
    you can measure the pupils." Thus, he acknowledged that mesopic and scotopic
    A-3790-17T4
    9
    are "different terms," but stated that "it's a spectrum between the term mesopic
    and scotopic and depending on how your lanes are set up is how well you can
    dim the lights and measure the pupils." According to Dr. Sulewski,
    I think that the semantics of dark versus dim is so
    relative and as I said earlier, you have to have a light
    on in the room to measure the pupil size or you can't
    measure it. I mean nobody has dark adaptive eyes that
    they can see in the dark and if someone has a very dark
    iris, it's even harder to see the pupils, so you might need
    a little bit more light. So I think what we as
    practitioners do, we do the best that we can to dim the
    lights down to a point that we can still measure the pupil
    and I'd say that's the standard of care in practice not to
    just throw on one light and say all right, here's my --
    here's my dim light measurement. We are not trying to
    make the pupil as small as we can so we can do the
    procedure, it's quite the opposite.
    Dr. Sulewski further testified that the WaveLight manual is a "guideline"
    and does not establish the standard of care, and reiterated that "everybody tries
    to measure the pupils in dark conditions." The trial judge ruled Dr. Sulewski's
    testimony was admissible because he "based his opinion on what he was taught,
    how he practiced, how his colleagues teach[,] and how he teaches," and found
    that although he was "somewhat equivocal" about the basis for his o pinion, that
    issue went to "the weight . . . and credibility of his testimony." Accordingly,
    the court denied Dr. Cohen's motion on the merits, and concluded that Dr.
    Sulewski's proffered expert testimony was admissible.
    A-3790-17T4
    10
    Dr. Sulewski's trial testimony largely echoed his testimony during the
    Rule 104 hearing.      Specifically, Dr. Sulewski testified that pupil size is
    important when evaluating a patient's candidacy for lasik surgery, and plaintiff's
    night vision complications were related to plaintiff's pupil size. On this point,
    Dr. Sulewski highlighted that according to plaintiff's medical records from
    Campus, plaintiff's right and left pupils were measured at 7.83 and 8.07
    millimeters, respectively in scotopic light. Dr. Sulewski described photopic
    light conditions as "with lights on," and scotopic as "very, very dim." Mesopic
    lighting was described as "dim illumination."
    The reason pupil measurement should be taken under dim illumination is
    to simulate the "worst case scenario . . . when patients are out at night" and to
    "screen out patients that have really large pupils because that is a risk factor for
    developing unwanted side effects . . . ." As to the distinction between scotopic
    and mesopic measurements, Dr. Sulewski testified:
    [A]lways since the beginning of time, we measure
    pupils with the lights very, very dim in the room and
    some people may call . . . that scotopic and some may
    call it mesopic[;] I don't want the jury to get tangled up
    in that terminology because . . . they're used sort of
    interchangeably in practice.
    Dr. Bernard Spier, also an expert in ophthalmology, testified on behalf of
    Dr. Cohen. He stated that the "particular topographer" used in this case, the
    A-3790-17T4
    11
    Zeiss Topographer, "can . . . measure the size of the pupil . . . ." However, he
    testified that the measurements obtained from the Zeiss Topographer were
    "invalid" because the pupil had been dilated with eye drops prior to the
    measurements.
    Dr. Spier stated "the standard of care in measuring . . . a patient's pupil
    size for lasik surgery . . . is to measure the pupil size in what is called mesopic
    light, which is the normal . . . or lay term" for "dim light" and is "in between . .
    . dark, which is called scotopic," and "bright light, which is photopic like on a
    sunny day . . . ." He further stated that "the best simulation of vision in the
    evening around dusk is simulated by a mesopic light condition," but agreed that
    "tr[ying] to get the light as low as possible but still be[ing] able to . . . make the
    measurement" is "an appropriate way to measure the pupil."
    Dr. Cohen similarly testified that "you want it as dark as you can [while]
    still be[ing] able to measure the pupil," but stated, in contradiction to Dr.
    Sulewski's testimony, that "[t]he standard of care is to measure under dim
    illumination, or mesopic conditions[,] and there [are] no interchangeable terms.
    Mesopic is dim, scotopic is dark, photopic is bright lights." Dr. Cohen described
    the ideal examination room as "essentially as dark as possible, as dim as
    A-3790-17T4
    12
    possible, with some transient illumination around you." When asked if he told
    plaintiff "he was a good candidate for lasik surgery," Dr. Cohen stated:
    From my measurements, I know -- keep in mind, I don't
    determine candidacy, surgeons determine candidacy. I
    take the measurements for the surgeons, I'm familiar
    with the procedure, I am a doctor, I know about this
    procedure so I will give him information. I will tell him
    if I found anything abnormal that would make him not
    a good candidate.        From all my measurements,
    everything looked good for him to proceed to see . . .
    Dr. Stein.
    At the close of plaintiff's case, Dr. Cohen moved for an involuntary
    dismissal under Rule 4:37-2(b), which the court denied. The jury subsequently
    returned a special verdict in plaintiff's favor in which it unanimously determined
    that: 1) Dr. Cohen negligently measured plaintiff's pupil size; 2) Drs. Stein and
    Cohen acted in concert in determining that plaintiff was a good candidate for
    Lasik; 3) plaintiff did not receive informed consent to undergo the procedure
    and the undisclosed risk caused him harm; 4) a reasonably prudent person would
    not have consented to the surgery had they been informed of the risk; and 5)
    plaintiff's large pupil size proximately caused his injury.
    The jury's verdict also awarded plaintiff $3,500 in medical expenses and
    $480,000 in non-economic losses, for a total award of $483,500. The court
    A-3790-17T4
    13
    entered judgment in accordance with the jury's verdict, and included
    prejudgment interest, attorney's fees, and costs. This appeal followed.
    On appeal, Dr. Cohen raises three primary arguments. First, he claims
    that the trial court committed error in denying his motion to dismiss. Second,
    Dr. Cohen argues the trial court incorrectly denied his motion in limine to bar
    Dr. Sulewski's expert testimony, misapplied our holding in Cho, and erred in
    granting a Rule 104 hearing.     Finally, Dr. Cohen maintains the trial court
    committed reversible error in denying his motion for an involuntary dismissal.
    We disagree with all of Dr. Cohen's arguments.
    II.
    In his first point of error, Dr. Cohen argues that he did not have a legal
    duty to obtain plaintiff's informed consent to undergo lasik surgery, and that it
    was reversible error for the trial court to apply the law of the case doctrine.
    Although we agree with defendant that the trial judge incorrectly relied on the
    motion judge's decision as the law of the case, the trial judge nevertheless
    reached the correct substantive result when she recognized that to the extent Dr.
    Cohen acted in concert with Dr. Stein, Dr. Cohen had a duty to obtain plaintiff's
    informed consent.
    A-3790-17T4
    14
    The law of the case doctrine does not apply to orders denying summary
    judgment. See Gonzalez v. Ideal Tile Importing Co., 
    371 N.J. Super. 349
    , 356
    (App. Div. 2004) ("[A]n order denying summary judgment is not subject to the
    law of the case doctrine because it decides nothing and merely reserves issues
    for future disposition."); Schuhalter v. Salerno, 
    279 N.J. Super. 504
    , 508 n.1
    (App. Div. 1995) ("The judge need not and should not have treated the prior
    denial of partial summary judgment as establishing the law of the case."). Here,
    the motion judge's interlocutory order merely denied defendant's motion for
    summary judgment, and was not dispositive to subsequent applications prior to
    final judgment.
    Any reliance on the law of the case doctrine by the trial court in denying
    Dr. Cohen's renewed motion to dismiss plaintiff's informed consent claim was
    harmless, however. The motion judge also correctly concluded that subject to
    the resolution of disputed factual issues, Dr. Cohen had a duty to plaintiff. "It
    is now settled that a physician has a legal duty to disclose to the patient all
    medical information that a reasonably prudent patient would find material before
    deciding whether to undergo a medical procedure." Acuna v. Turkish, 
    192 N.J. 399
    , 415 (2007) (citing Largey v. Rothman, 
    110 N.J. 204
    , 211-12 (1988)).
    While the existence of such a duty is a question of law, a "legal determination
    A-3790-17T4
    15
    of the existence of a duty may differ" based on specific factual issues in the case.
    Cheng Lin Wang v. Allstate Ins. Co., 
    125 N.J. 2
    , 15 (1991).
    That duty, however, generally is not imposed on a physician who merely
    refers a patient to another doctor. Herrara, 
    277 N.J. Super. at 268-70
    . Rather,
    the duty of a referring physician, who does not act "in concert" or in "an agency
    relationship" with the operating physician, is to not act negligently in making
    the referral. 
    Id. at 267-69
    ; accord Sprinkle v. Lemley, 
    414 P.2d 797
    , 800 (Or.
    1966) ("A general practitioner or family physician who calls in a specialist to
    treat or perform surgery on a patient is not liable for the negligence of the
    specialist if there is no concert of action.").
    But when physicians have an agency relationship or act in concert with
    respect to a patient, both physicians have a duty to obtain the patient's informed
    consent to proceed with treatment. See Herrara, 
    277 N.J. Super. at
    267 (citing
    Stovall v. Harms, 
    522 P.2d 353
     (Kan. 1974)); accord O'Grady v. Wickman, 
    213 So.2d 321
    , 325-26 (Fla. Dist. Ct. App. 1968) (explaining that "many courts . . .
    have held that one physician is a joint tortfeasor with the other and is liable for
    his actions when there is a concert of action and a common purpose existing
    between the two doctors").
    A-3790-17T4
    16
    "Parties are acting in concert when they act in accordance with an
    agreement to cooperate in a particular line of conduct or to accomplish a
    particular result." Restatement (Second) of Torts § 876, cmt. a (1979). Here,
    the record firmly supports the jury's finding that Drs. Cohen and Stein acted in
    concert toward a common goal of determining whether plaintiff was a good
    candidate for lasik surgery. Dr. Stein testified that he has "worked with Dr.
    Cohen" in lasik procedures for at least twenty years. And, Dr. Cohen testified
    that he "collect[s] the data for" Dr. Stein through pre-operative measurements
    and provides that data to Dr. Stein prior to surgery. Further, Dr. Cohen admitted
    that he would have told plaintiff "if [he] found anything abnormal that would
    make [plaintiff] not a good candidate" for the lasik surgery that was ultimately
    performed by Dr. Stein.
    Although Dr. Stein denied that pupil size was relevant, the jury was free
    to evaluate his credibility, the scope of his two-decade professional relationship
    with Dr. Cohen, and plaintiff's testimony that he would not have proceeded with
    the surgery had he been informed that his pupil sizes were larger than seven
    millimeters. Thus, unlike in Herrara, the record failed to establish that Dr.
    Cohen was merely a referring physician to whom the duty to obtain informed
    consent does not apply. See Herrara, 
    277 N.J. Super. at 269-70
    .
    A-3790-17T4
    17
    Further, "[w]hether a duty exists is ultimately a question of fairness. The
    inquiry involves a weighing of the relationship of the parties, the nature of the
    risk, and the public interest in the proposed solution." Goldberg v. Hous. Auth.
    of City of Newark, 
    38 N.J. 578
    , 583 (1962) (emphasis omitted); see also Podias
    v. Mairs, 
    394 N.J. Super. 338
    , 355 (App. Div. 2007) ("[T]he question of duty
    remains one of judicial balancing of the mix of factors peculiar to each case .");
    Kelly v. Gwinnell, 
    96 N.J. 538
    , 544 (1984) ("[R]ealistically," the issue "whether
    a duty exists" amounts to "whether this Court should impose such a duty.").
    Here, the parties' relationship establishes that Dr. Cohen examined and
    measured plaintiff's eyes before plaintiff consented to Dr. Stein performing
    surgery. Dr. Cohen testified that if he "found anything abnormal that would
    make [plaintiff] not a good candidate," he would have so informed plaintif f. In
    addition, Dr. Cohen provided the data he collected to Dr. Stein, as part of the
    protocol for lasik eye surgery during the doctors' twenty-plus year working
    relationship. Those facts weigh in favor of imposing a duty on Dr. Cohen to
    obtain plaintiff's informed consent and make this case factually dissimilar from
    Herrara. See Herrara, 
    277 N.J. Super. at 269-70
    .
    In addition, the nature of the risk involved in an optometrist's failure to
    inform a patient of his or her large pupils is that a patient, like plaintiff here,
    A-3790-17T4
    18
    will unwittingly expose him or herself to a greater chance of suffering long-term
    vision problems. In this regard, Dr. Cohen conceded that the disclosed risks in
    the consent form "would be meaningless" to a person who was unaware that he
    or she had large pupils, and because Dr. Cohen had "the opportunity and ability
    to exercise care" to mitigate the increased risk, imposing the duty would be fair
    and equitable. Robinson v. Vivirito, 
    217 N.J. 199
    , 213 (2014).
    Finally, the public interest in the proposed solution also supports the
    imposition of a duty because requiring pre-operative optometrists who act in
    concert with a surgeon, as the jury concluded Dr. Cohen did here, to obtain their
    patient's informed consent would have no readily discernible adverse effects on
    the public who would be better protected against unknowingly exposing
    themselves to increased risks of long-term vision problems.
    III.
    As noted, on the eve of trial, Dr. Cohen filed what he characterized as a
    "motion in limine to bar certain testimony of plaintiff's liability expert."
    According to defendant, a favorable ruling on that motion "would not have
    resulted in the dismissal of plaintiff's case," but "would only have barred
    testimony by Dr. Sulewski regarding his personal opinions as to measurement
    of pupil size," and thus did not fall within the purview of Cho. We agree with
    A-3790-17T4
    19
    the trial judge that plaintiff's motion violated the due process concerns we
    expressed in Cho.
    In Cho, we explained that "whether a motion is correctly termed a motion
    in limine is not dictated by the fact it is brought literally on the threshold of
    trial." Cho, 443 N.J. Super. at 470. Rather, "[w]hen granting a motion will
    result in the dismissal of a plaintiff's case or the suppression of a defendant's
    defenses, the motion is subject to Rule 4:46, the rule that governs summary
    judgment motions." Id. at 471.
    Here, the trial court correctly concluded that granting defendant's motion
    would amount to a dismissal of plaintiff's case. Indeed, Dr. Sulewski's expert
    testimony on the standard of care served as plaintiff's affirmative proof of: 1)
    the standard of care for measuring pupil size prior to lasik eye surgery; 2) Dr.
    Cohen's deviation from that standard of care; and 3) the causal relationship
    between Dr. Cohen's failure to inform plaintiff that he, in fact, had large pupils
    and plaintiff's damages.
    Without Dr. Sulewski's testimony, plaintiff could not have established that
    Dr. Cohen negligently measured plaintiff's pupil size. If Dr. Cohen measured
    plaintiff's pupil size at 6.5 millimeters pursuant to the applicable standard of
    care proposed by Dr. Spier, then defendant was not, in fact, at a heightened risk
    A-3790-17T4
    20
    for developing the disclosed night vision complications of lasik eye surgery.
    Accordingly, barring Dr. Sulewski's testimony as to the standard of care would
    have defeated plaintiff's claim that Dr. Cohen negligently measured his pupils,
    as well as plaintiff's related claim that Dr. Cohen breached a duty by failing to
    inform plaintiff that he had large pupils. Therefore, a ruling in defendant's favor
    on the motion would have effectively resulted in a dismissal of plaintiff's
    complaint.    Thus, the trial court correctly concluded the motion was
    procedurally improper under Cho.
    However, even if we were to assume that Dr. Cohen's motion was not
    procedurally defective, any error by the trial judge by relying on Cho was
    inconsequential as the court addressed the merits of the motion and subsequently
    held a Rule 104 hearing. And, contrary to Dr. Cohen's claim, the court did not
    abuse its discretion in deciding to conduct that hearing.
    "An abuse of discretion 'arises when a decision is made without a rational
    explanation, inexplicably departed from established policies, or rested on an
    impermissible basis.'" Milne v. Goldenberg, 
    428 N.J. Super. 184
    , 197 (App.
    Div. 2012) (quoting Flagg v. Essex Cnty. Prosec., 
    171 N.J. 561
    , 571 (2002));
    see also Kemp ex rel. Wright v. State, 
    174 N.J. 412
    , 428 (2002) (stating that
    whether to hold a Rule 104 hearing "when the ruling on admissibility" of expert
    A-3790-17T4
    21
    testimony "turns on factual issues" is a question that "rests in the sound
    discretion of the [trial] court") (quoting Padillas v. Stork-Gamco, Inc., 
    186 F.3d 412
    , 418 (3d Cir. 1999)).
    In deciding to hold a Rule 104 hearing, the court concluded:
    There are several passages [of Dr. Sulewski's
    deposition testimony] that are referred to in terms of
    whether or not Dr. Sulewski was testifying about a
    standard of care that's accepted by the general medical
    community as far as the pupil measurement issue.
    Some of his testimony says this is my personal opinion,
    this is my personal opinion and yes, it's a little shaky
    about what he bases it on, his group and his history but
    at the end of the day, I can't outright dismiss it at this
    point in time without a 104 [h]earing regarding the net
    opinion issue.
    The parties only included an excerpt of Dr. Sulewski's deposition
    testimony in the record on appeal.       Our review of that limited testimony,
    however, convinces us that the court properly exercised its discretion in
    conducting a Rule 104 hearing.
    Indeed, while Dr. Sulewski certainly offered opinions in his deposition
    that, in isolation, indicate he was offering only his personal opinion and not that
    of the broader medical community, he also testified at that deposition that his
    opinion was consistent with a generally accepted standard of care. Indeed, Dr.
    Sulewski testified that his "standard of care" was based on the "standard of care
    A-3790-17T4
    22
    . . . at the Scheie Institute" at the University of Pennsylvania, "[a]nd everywhere
    else [he has] been." Accordingly, and contrary to defendant's claim that plaintiff
    failed to make a requisite "threshold showing that an arguable issue exists as to
    the evidence . . . [justifying] . . . a full preliminary hearing under" Rule 104, the
    record supports the trial judge's decision to hold a Rule 104 hearing to elicit
    more clearly the factual basis for Dr. Sulewski's proposed testimony.
    IV.
    Dr. Cohen next argues that Dr. Sulewski's testimony at the Rule 104
    hearing and at trial were inadmissible net opinions. Specifically, he contends
    that "Dr. Sulewski's opinions were patently insufficient in that they were void
    of any standard, recognized practice, or treatise, other than the expert's personal
    view." According to defendant, "Dr. Sulewski failed to provide the 'why and
    wherefore' of his opinion and only gives his conclusions as to the applicable
    standard of care and causation which are completely unsupported." Again, we
    disagree.
    "[A]n expert's bare opinion that has no support in factual evidence or
    similar data is a mere net opinion which is not admissible and may not be
    considered." Pomerantz Paper Corp. v. New Cmty. Corp., 
    207 N.J. 344
    , 372
    (2011). This "admissibility rule has been aptly described as requiring that the
    A-3790-17T4
    23
    expert 'give the why and wherefore' that supports the opinion, 'rather than a mere
    conclusion.'" 
    Ibid.
     (quoting Polzo v. Cnty of Essex, 
    196 N.J. 569
    , 583 (2008)).
    "Similarly, if an expert cannot offer objective support for his or her opinions,
    but testifies only to a view about a standard that is 'personal,' it fails because it
    is a mere net opinion." Id. at 373. The trial judge's decision to admit Dr.
    Sulewski's expert testimony is governed by the abuse of discretion standard on
    appeal. Pomerantz, 
    207 N.J. at 371
    ; see also Estate of Hanges v. Metro. Prop.
    & Cas. Ins. Co., 
    202 N.J. 369
    , 383-84 (2010).
    In a malpractice action, an expert may properly testify as to the standard
    of care where the expert possesses "sufficient knowledge of professional
    standards to justify the expression of an opinion." Carey v. Lovett, 
    132 N.J. 44
    ,
    64 (1993) (citing Sanzari v. Rosenfeld, 
    34 N.J. 128
    , 136 (1961)). Where the
    expert opinion is grounded in "knowledge, skill, experience, training, or
    education," a court "should allow admission of the testimony." Koseoglu v.
    Wry, 
    431 N.J. Super. 140
    , 159 (App. Div. 2013) (emphasis added) (quoting
    N.J.R.E. 702). Thus, it is not necessary to show that the expert's opinion derives
    from a particular medical text or treatise. See Khan v. Singh, 
    200 N.J. 82
    , 101
    (2009) ("[A]n expert in a malpractice action need not have had personal
    experience with the situation under investigation to testify to the applicable
    A-3790-17T4
    24
    standard of care" since the expert's "knowledge may derive from observations
    of the methods used by members of the profession or from his [or her] study of
    professional treatises and journals.") (emphasis added) (quoting Sanzari, 
    34 N.J. at 137
    ).
    Here, the trial judge found that Dr. Sulewski based his opinion about the
    applicable standard of care "on what he was taught, how he practiced, how his
    colleagues teach[,] and how he teaches," and explained that while he was
    "somewhat equivocal" about the basis for his opinion, that issue went to "the
    weight" and "credibility of his testimony." The record supports these findings.
    Dr. Sulewski testified that the "standard of care" he teaches in his "various
    teaching positions" is to use "relatively dark conditions" with "enough
    illumination around the eye that you can actually measure the pupil si ze," that
    his "colleagues" teach the same standard of care, and that he was "trained" as a
    practitioner to understand that is the standard of care. He stated that he
    "consult[s] with other ophthalmologists in terms of what they teach," that
    "everybody tries to measure the pupils in dark lighting conditions," and "[t]hat's
    what most people that [he] know[s] do." These facts form a legally sufficient
    basis to support the trial judge's decision to qualify Dr. Sulewski as an expert on
    A-3790-17T4
    25
    the issue of the standard of care for measuring pupil size prior to lasik eye
    surgery and for him to present those opinions to the factfinders.
    V.
    Finally, Dr. Cohen maintains "it was harmful error for the trial court to
    deny [his] motion for directed verdict on the basis that a jury question existed
    on th[e] issue of an agency relationship or that the doctors were acting in
    concert." Dr. Cohen further contends that there was no factual dispute as to
    what the applicable standard of care was, or that he abided by that standard. We
    are not persuaded by either of these arguments.
    Appellate courts review rulings on "a motion for involuntary dismissal at
    trial using the same standard as the trial court." Prager v. Joyce Honda, Inc.,
    
    447 N.J. Super. 124
    , 134 (App. Div. 2016) (citing Smith v. Millville Rescue
    Squad, 
    225 N.J. 373
     (2016)). Under that standard, the motion must "be denied
    if the evidence, together with the legitimate inferences therefrom, could sustain
    a judgment in plaintiff's favor." R. 4:37-2(b). "[T]he judicial function here is
    quite a mechanical one" as the court "is not concerned with the worth, nature or
    extent (beyond a scintilla) of the evidence, but only with its existence, viewed
    most favorably to the party opposing the motion." Dolson v. Anastasia, 
    55 N.J. 2
    , 5–6 (1969).
    A-3790-17T4
    26
    As noted, the jury's ultimate decision that Drs. Cohen and Stein acted in
    concert in determining whether plaintiff was a good candidate for lasik eye
    surgery was properly supported by the record. As such, there was no error in
    submitting that question to the jury. Further, because Dr. Sulewski's testimony
    was competent evidence, the jury properly could have found from his testimony
    that Dr. Cohen did not measure plaintiff's pupils in accordance with the
    applicable standard of care by failing to set the illumination in the room to a
    sufficient dimness or darkness, regardless of the terminology used by Dr. Cohen
    or the manual provided by the WaveLight laser manufacturer.
    Dr. Sulewski's testimony that plaintiff's pupils were measured at eight
    millimeters in diameter in dimmer or darker illumination was competent
    evidence that plaintiff was at a heightened risk of experiencing the symptoms
    disclosed on the consent form, and further establishes negligence by Dr. Cohen
    in measuring plaintiff's pupils. Coupled with the fact that Dr. Cohen never
    informed plaintiff that he had large pupils, there was sufficient evidence to
    establish a causal relationship between plaintiff's damages and Dr. Cohen's
    measurements and failure to inform plaintiff of the increased risk of symptoms.
    Defendant's contrary proofs at trial were questions that went to credibility or the
    A-3790-17T4
    27
    weight of the evidence, which is beyond the "judicial function" when deciding
    a motion for a directed verdict. Dolson, 
    55 N.J. at 5
    .
    To the extent we have not addressed any of defendant's remaining
    arguments, it is because we find them without sufficient merit to warrant
    discussion in a written opinion. R. 2:11-3(e)(1)(E).
    Affirmed.
    A-3790-17T4
    28