Related Experiment Video
Updated: Nov 23, 2025
Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
Published on: July 21, 2020
Monocular and binocular visual parameters associated to vision-related quality of life in patients with epiretinal
Raoul Kanav Khanna1,2, Tiphanie Pichard3, Jeremy Pasco4
1Department of Ophthalmology, Bretonneau University Hospital, 2 boulevard Tonnellé, 37044, Tours, France. raoul.khanna@univ-tours.fr.
Purpose:
Binocular visual impairment related to unilateral idiopathic epiretinal membranes (uiERM) and its association with vision-related quality of life (VR-QoL) has not yet been investigated. This study aimed to explore binocular visual parameters (distance binocular best-corrected visual acuity (BCVA), aniseikonia, stereopsis) and VR-QoL in patients with uiERM.
Methods:
We carried out a prospective single-centre cohort study. The following data were collected: VR-QoL (NEI VFQ-25), distance monocular and binocular BCVA, horizontal and vertical metamorphopsia (M-charts test), horizontal and vertical aniseikonia (NAT TEST) and stereoacuity (TNO test). Multiple linear regression analyses were performed to evaluate factors influencing VR-QoL.
Results:
Forty-six patients with uiERM and visual complaints were included. Aniseikonia was found in 40 (80%) participants. Stereoacuity was poor (above 120 s of arc) in 46 (100%) participants. Distance monocular BCVA, horizontal metamorphopsia and horizontal aniseikonia were the factors associated with VR-QoL in patients with uiERM.
Conclusions:
In subjects presenting uiERM, aniseikonia is frequently found and stereopsis is constantly impaired. We advocate quantitative testing of metamorphopsia and aniseikonia in addition to BCVA for the assessment of global visual function. Further investigations are needed to evaluate the effect of vitrectomy on these parameters and VR-QoL.
Trial Registration:
EudraCT Number/ID RCB: 2016-A00252-49.
