Progression of Stereopsis Recovery in Strabismic Patients: A One-Month and Three-Month Post-Surgery Evaluation
DOI:
https://doi.org/10.61919/2wrp4g10Keywords:
Strabismus, stereopsis, stereoacuity, ocular alignment, exotropia, esotropia, strabismus surgeryAbstract
Background: Strabismus, a misalignment of the eyes, disrupts binocular vision and stereopsis, impairing depth perception and functional visual tasks. Surgical correction aims to restore ocular alignment and may improve stereoacuity, yet the early postoperative trajectory of stereopsis recovery remains incompletely defined. Objective: To evaluate the progression of stereopsis recovery and associated changes in visual acuity and ocular alignment at one- and three-months following strabismus surgery. Methods: In this prospective longitudinal observational study, 34 patients aged 8–22 years with esotropia, exotropia, hypertropia, or hypotropia underwent standardized strabismus surgery at a tertiary eye care centre. Preoperative and postoperative assessments at one and three months included best-corrected visual acuity (Snellen chart), ocular deviation (prism cover tests), and stereoacuity (Titmus fly test, arc seconds). Friedman tests with Bonferroni-corrected post-hoc analyses determined statistical significance (p<0.05). Results: By three months, 6/6 visual acuity improved from 14.7% to 38.2% in right eyes and from 20.6% to 38.2% in left eyes (p<0.001). Mean ocular deviation decreased significantly from 30 PD in 82.4% of patients preoperatively to 0 PD in 41.2% at three months (p<0.001). Stereoacuity improved from 1861.76±1235.83 to 770.88±1084.76 arc seconds (p<0.001), with aligned patients demonstrating the greatest gains. Conclusion: Strabismus surgery yields substantial improvements in alignment, visual acuity, and stereoacuity within three months, with optimal outcomes observed in patients achieving complete alignment.
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Copyright (c) 2025 Sibgha Naseem, Sahar Aslam, Ayesha Sajid, Zaryab Khan, Zara Arif, Shehzad Ahmad (Author)
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