J Korean Ophthalmol Soc.  2019 Jun;60(6):534-540. 10.3341/jkos.2019.60.6.534.

Clinical Study of Changes in Eye Dominance after Pseudophakic Conventional Monovision

Affiliations
  • 1Department of Ophthalmology, Konkuk University School of Medicine, Seoul, Korea. dr_shin@hanmail.net

Abstract

PURPOSE
The purpose of this study was to evaluate whether eye dominance changes after conventional pseudophakic monovision, and to identify factors that affect changes in eye dominance.
METHODS
This retrospective study included 70 patients who underwent bilateral conventional monovision cataract surgery. Patients were divided into two groups based on whether they experienced a change in the dominant eye. We compared patients' uncorrected distance visual acuity (UCDVA), uncorrected near visual acuity (UCNVA), best-corrected visual acuity (BCVA), spherical equivalent, stereopsis, and time interval between cataract surgeries.
RESULTS
The mean age was 71.26 ± 10.84 (range, 25-90) years, mean interval between surgery in each eye was 118.46 ± 183.50 (range, 17-1,018) days, and mean postoperative diopter difference was 1.16 ± 0.53 (range, 0.00-2.75) diopters. After bilateral cataract surgery, 22 patients (31.43%) experienced a change in eye dominance, whereas 48 patients (68.57%) experienced no change. There were no differences in the time interval between cataract surgeries, preoperative UCDVA and UCNVA, pre- and postoperative BCVA, or stereopsis in either group. Patients who experienced a change in eye dominance showed smaller differences between preoperative and postoperative spherical equivalent, compared with patients who experienced no change in eye dominance (t-test, p < 0.05).
CONCLUSIONS
Twenty-two (31.43%) patients whose nondominant eyes were targeted for near vision showed altered eye dominance after conventional monovision cataract surgery. Eye dominance shows greater plasticity in patients with smaller differences between preoperative and postoperative spherical equivalent.

Keyword

Bilateral cataract surgery; Conventional pseudophakic monovision; Presbyopia; Ocular dominance

MeSH Terms

Cataract
Clinical Study*
Depth Perception
Dominance, Ocular*
Humans
Plastics
Presbyopia
Retrospective Studies
Visual Acuity
Plastics
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