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R. Amar, K. Bernard, P. Verdy, M. Amini, C. Boscher; Ocular Fixation Analysis with MP–1 Microperimetry in ARMD : Advantages and Limits . Invest. Ophthalmol. Vis. Sci. 2006;47(13):5678.
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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.
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.
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
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..
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