Effect of Myopic LASIK Surgery on Ocular Alignment and Binocular Vision in Patients with Manifest or Intermittent Exotropia
Authors: Mahmoud A Saleh. MD*, Mhmoud I Gazy. MD, Ahmed I Galhoom. MD, Ahmed E Hodiep. MD , Mohamed El moddather MD, Mostafa F Mohammed MD.
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To evaluate the effect of myopic lasik surgery on ocular alignment and binocular vision in patients with manifest or intermittent exotropia. 26 patients (52 eyes) with exotropia (9 patients manifest exotropia and 17 patients intermittent exotropia).Patients seeking myopic refractive surgery with mild amblyopia, ametropia or anisometropia were consecutively included in this study. Amblyopic eyes with visual acuity <20/60 and patients with vertical strabismus were excluded from the study. Myopic LASIK surgery was performed on 44 eyes. Ocular alignment and binocular function remained unchanged postoperatively in all except three patients with high anisometropia who experienced an improvement in binocular function. In these patients, the preoperative manifest deviation became intermittent in two patients and latent in one patient after surgery with improving fusion and stereopsis. Manifest or intermittent exotropia is not a contraindication for myopic LASIK surgery provided some specific recommendations are taken in consideration, such as an adequate preoperative examination and consecutive surgery of both eyes starting with the dominant eye, and aiming at emmetropia for the dominant eye and for the non‐dominant eye.
Keyword: LASIK, Manifest exotropia, Intermittent exotropia.