Abstract
Purpose: :
Microperimetry MP1 holds three functions, retinography, perimetry, and ocular fixation testing . The goal of this study is to evaluate advantages and limits of ocular fixation testing in AMD.
Methods: :
Prospective consecutive study of 90 eyes in 50 patients with atrophic and exsudative ARMD. Localisation and stability of fixation have been studied, matching with size , duration, and presence or absence of visual rehabilitation aiming to develop a PRL (Prefered Retinal Locus). Examination was made before and after visual rehabilitation.
Results: :
The eye tracker system allowed to define stability of fixation in 98 % of eyes.Limitations : resolution of the infrared camera did not allow reliable testing in case of obturing cataract in 2% of eyes
Conclusions: :
Microperimetry MP1 is a reproducible device for ocular fixation analysis. It is especially helpful for the follow up of visual rehabilitation to develop PRL. Performance is limited in case of obturing cataract..