Results of the minimally invasive surgery in patient with horizontal strabismus

Abstract

Objective: Determine the results of minimally invasive surgery in patients with horizontal strabismus.
Methods: A prospective longitudinal descriptive study was conducted of a series of 19 patients (16 right eyes, 17 left eyes) attending the Pediatric Ophthalmology Service at Ramón Pando Ferrer Cuban Institute of Ophthalmology from June 2018 to July 2019. These patients underwent minimally invasive strabismus surgery and were followed up for six months. The variables considered were deviation type, visual acuity, postoperative signs, pre- and postoperative angle of deviation, surgical success, fusion, stereopsis and complications.
Results: Of the patients studied, 73.7% presented esotropias; mean pre- and postoperative visual acuity was very similar in the two eyes; the most common postoperative sign was slight conjunctival hyperemia (75% right eyes and 64.5% left eyes) at 24 hours. Statistical differences (p < 0.001) were found in the horizontal angle of deviation in pre- and postoperative prism diopters, with 84.2% surgical success. 78.6% and 80% of the patients with esotropia and exotropia achieved fusion, but only 28.5 and 60% of them, respectively, achieved stereopsis. Complications occurred in 15.8% of the patients.
Conclusions: Good motor results were obtained, as well as acceptable sensory results in patients undergoing minimally invasive horizontal strabismus surgery.

Key words: Minimally invasive strabismus surgery; fusion; stereopsis.