ABSTRACT
ABSTRACT: Introduction: Cyclic esotropia is a rare form of strabismus and poorly understood disorder of ocular motility which is characterized by a regular cycle of squinting and non squinting days. It is typically an acquired form of concomitant non-accomodative strabismus and usually lasts for 48 hours. Purpose: To report long-term binocular vision outcome after strabismus surgery in a case of cyclic esotropia with 24-hour cyclic pattern. Methods: Interventional case report. Results: A healthy 4-year-old female child with alternative day esotropia with 24-hour cyclic pattern that persisted for one year, underwent bimedial rectus recession of 11.0 mm from the limbus through fornix approach. After the surgery the cyclic pattern was abolished with straight eyes at 5 years follow up with normal binocular function as exemplified by fusion on worth 4 dot test and stereopsis of 30 secs of arc with Randot stereotest. Conclusion: This case highlights the importance of awareness of this rare ocular motility disorder, with need for repeated examinations, to confirm the diagnosis and treat early with surgical intervention, thereby re-establishing the normal binocular vision.
