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Presbyopia compensation: looking for cortical predictors
Author(s) -
Imbeau L.,
Majzoub S.,
Thillay A.,
BonnetBrilhault F.,
Pisella P.J.,
Batty M.
Publication year - 2015
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2015.0610
Subject(s) - stereoscopic acuity , presbyopia , anisometropia , medicine , optometry , monocular , contrast (vision) , binocular vision , ophthalmology , visual acuity , audiology , refractive error , computer science , artificial intelligence
Purpose New surgical techniques have recently been developed in order to compensate for visual impairment for presbyopic patients. However, the follow‐up results are still variable, depending on the correction modality used and/or the patient. The main purpose of this study was to identify predictive electrophysiological markers of post‐correction visual comfort for presbyopic patients. Methods Thirteen presbyopic patients received randomized presbyopia compensation with contact lenses successively by monovision, and by multifocality, for 3 weeks with a break of two weeks without any presbyopia compensation in between. Follow‐up examinations were performed at entry (T0) and after each correction modality (Tmono and Tmulti). They included testing for near and distance visual acuity, stereoacuity ( TNO test), binocular contrast sensitivity and electrophysiological recordings (monocular and binocular patterns Visual Evoked Potentials). Results A significant correlation was found between the TNO score difference (monovision‐multifocallity) and the P100 latency evoked by the binocular pattern at T0, suggesting that late P100 latency could be associated with a lesser decrease in stereoacuity with monovision. Conclusions While our findings do not permit decisions regarding the superiority of f one type compensation over another, these preliminary results support using the P100 latency evoked by binocular patterns as a predictor of post‐compensation stereoacuity.