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Binocular vision after phakic IOL implantation for high myopia and astigmatism

Poster Details

First Author: J.Gonzalez-Meijome PORTUGAL

Co Author(s):    A. da Silva   H. Neves   C. Borges   J. Salgado-Borges     

Abstract Details


To correlate the Clínical observations related with the oculomotor binocular balance after anterior chamber phakic IOL (PIOL) implantation and three-dimensional imaging of the anterior segment with Scheimpflug photography.


Ophthalmology, CHEDV, Sta. Maria da Feira, Portugal


In this work we report a case series of 5 patients undergoing successful anterior chamber phakic intra-ocular (IOL) implantation. We investigated the Clínical findings involving accommodative activity and binocular balance including fixation disparity with Wesson card, suppression and phoria. Scheimpflug imaging was used to measure the position of the lens in the anterior chamber and explain the binocular vision balance found.


All patients undergone uneventful PIOL implantation. Despite satisfactory surgery, several patients presented significant horizontal and vertical latent deviations. The patients rarely reported symptoms but some of them presented alternate suppression when visual acuity was evaluated under dissociated stimulus. Tomographic analysis allowed to justify part of the vertical phoria by inferior decentration of the lens.


Heterophoric deviations are common observations after anterior chamber iris fixated phakic IOL implantation. The results can be confirmed through Scheimpflug photography. Despite this, patients rarely complained of visual problems what suggest a robust adaptation mechanism. Fixation disparity analysis is sensitive to identify vertical deviations even in non-symptomatic patients after PIOL implantation. FINANCIAL INTEREST: NONE

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