الفهرس | Only 14 pages are availabe for public view |
Abstract Duane retraction syndrome is a congenital ocular motility disorder characterized by marked limitation of abduction, variable limitation of adduction, and globe retraction with narrowing of the palpebral fissure on adduction. It is the most common type of congenital ocular aberrant innervation with an incidence of 1% to 4% of strabismus patients. This prospective, interventional, non randomised study of 51 patients who were diagnosed with DRS at Ophthalmology and Squint clinic was done from July 2017 to July 2019. After detailed information regarding age, gender, laterality, family history of strabismus, refractive status and history of strabismus surgery was taken. Visual acuity and refraction, complete orthoptic examination. All patients were categorized into types I, II, and III DRS, based on Huber’s classification. Spectacles were prescribed for patients with refractive errors. Patching of the non amblyopic eye was advised in patients below the age of 10 years. Surgery was advised in patients with anomalous head posture of more than 15 degrees, cosmetically unacceptable upshoot or downshoot, ocular deviation in primary position and globe retraction. Post operative follow up of surgical cases was done at 1 month and were followed up for a minimum period of 6 months . The procedure performed was determined by the amount of deviation in primary position and the degree of abnormal head position. Forced duction testing was performed intraoperatively. Medial or lateral rectus muscle recession was the surgical procedure of choice. In esotropic patients, medial rectus (MR) recession was done and in exotropic patients lateral rectus (LR) recession was done. In patients with unacceptable overshoot, lateral rectus recession with Y splitting was done. The study showed that every patient of DRS should be carefully evaluated early in order to avoid amblyopia. Surgery should be done on individual bases in order to achieve best results. Patients and parent counseling is of great important. |