Resumen

PONS CASTRO, Lucy et al. Behaviour of the ocular stability after intermittent exotropia surgery. Rev Cubana Oftalmol [online]. 2013, vol.26, n.2, pp. 259-272. ISSN 0864-2176.

Objective: to describe the ocular stability of patients undergoing intermittent exotropia surgery and its relationship with some risk factors. Methods: a longitudinal, prospective, and descriptive case series study was conducted in patients undergoing intermittent exotropia surgery at pediatric ophthalmology service of "Pando Ferrer" Cuban Institute of Ophthalmology in the period of January 2009 to September 2011. The universe of study was 35 patients with intermittent exotropia and preoperative deviation angle of ? 20 diopters, measured one year after surgery. The variables were deviation angle preoperatively and postoperatively, age at surgery, stereoscopic visual acuity preoperatively and postoperatively, at 6 months and one year later, and the presence or absence of refractive error. Results: iIn this group, 48.6% of patients who underwent intermittent exotropia surgery showed eye alignment at 6 months, whereas surgical stability after a year was 32.4%. All the patients who achieved stability after ocular surgery had stereopsis, 75% of the patients, who showed good stereopsis, failed in reaching surgical stability one year later. All the patients aged 4 to 5 years had a good eye alignment and 65.7% of patients had refractive error. Conclusions: early surgical intervention is important in improving motor functional outcome. The patients who achieve the maximum stability in ocular alignment have good stereoscopic visual acuity. There is no significant relationship between refractive error and the stability of eye alignment.

Palabras clave : intermittent exotropia; stereopsis and eye stability.

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