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Archivos de la Sociedad Española de Oftalmología

Print version ISSN 0365-6691

Abstract

GOMEZ DE LIANO-SANCHEZ, R. et al. Strabismus and diplopia after refractive surgery. Arch Soc Esp Oftalmol [online]. 2012, vol.87, n.11, pp.363-367. ISSN 0365-6691.  http://dx.doi.org/10.1016/j.oftal.2011.12.006.

Objective: To evaluate factors that may decompensate a strabismus or lead to diplopia after refractive surgery. Methods: Retrospective study of 19 patients, who presented with binocular decompensation after refractive surgery. Mean age at surgery was 38.89 SD 10.26 (27-63) years. Fourteen patients were myopic, 5 hyperopic, and 5 of them had a marked anisometropia. The photo-refractive keratectomy procedure was used in 3 cases, laser-assisted in situ keratomileusis (LASIK) in 13, posterior chamber-IOL)+LASIK in one of them, and bilateral IOL in 2 cases. Results: There was a prevalence of strabismus of 0.12%. All of our patients had a binocular pathology previous to the refractive surgery. After surgery, 11 patients had an esophoria or esotropia, 3 exophoria or exotropia, 2 vertical deviations, and 3 horizontal and vertical deviations. Several factors often worked simultaneously in the same patient, such as: residual accommodation, refractive overcorrection (hyperopia), visual instability or anisoacuity, high myopia and phoria decompensation, elimination of suppression, dominance change, and a presbyopic age. Conclusions: All of our patients had a previous binocular pathology. Binocularity may decompensate by several factors but mostly by myopic overcorrection, accommodation and visual factors, particularly in patients close to or in presbyopic age, in anisometropia and high myopia.

Keywords : Refractive surgery; Diplopia; Strabismus; Binocular vision; Anisometropia.

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