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Changes in distance and near visual acuity

Poster Details

First Author: C.Kucukerdonmez TURKEY

Co Author(s):    E. Cinar   M. Zengin           

Abstract Details


To investigate the axial shift of multifocal intraocular lenses (MIOL) after Nd:YAG capsulotomy by measuring the anterior chamber depth (ACD)and to determine its potential effect on refraction, near and distance visual acuity(VA).


Izmir University, Faculty of Medicine, Department of Ophthalmology


This study comprised 36 eyes of 18 patients (6 female and 12 male) with multifocal IOL who underwent Nd:YAG capsulotomy for posterior capsule opacification.Near and distance VA and objective refraction values were determined at 1 week and 1 months after capsulotomy. ACD and other biometrical parameters including axial length(AL), central corneal thickness(CCT) and keratometric data(KD) were measured using optical biometry.


The mean distance and uncorrected near VA at the baseline increased from 0.35±0.15 (logMAR) and 0.35±0.14 to 0.13±0.03 and 0.03±0.04 at first week, and 0.11±0.03 and 0.008±0.02 at first month(p<0.05). The VA increase at the distance and near were not significantly different(p>0.05).The mean spherical equivalent which was -0.01±0.56 diopters(D) at the baseline changed to -0.05±0.43D at first week and -0.05±0.36D at first month(p>0.05). The mean ACD increased from 3.6±0.47mm to 3.77±0.4mm and 3.8±0.38mm at the first week and month, respectively. The changes in ACD were statistically significant (P<0.05).


Laser capsulotomy increases ACD which shows indirectly a change in the MIOL position, however, this effect does not correlate with the change in VA and refraction.

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