Preoperative and Postoperative Refractive and Topographic Evaluation in Patients With Primary Pterygium: Comparison of Two Surgical Techniques

This study evaluated changes in refractive status and corneal topography before and after surgical treatment of primary pterygium. Patients undergoing pterygium excision were treated with either conjunctival autograft or amniotic membrane transplantation. Visual acuity, refractive error, and corneal topographic parameters were assessed before surgery and after postoperative follow-up to compare the effectiveness of both surgical techniques in restoring corneal optics and improving visual outcomes.

NCT Number	NCT07742995
Lead Sponsor	Instituto de Oftalmología Fundación Conde de Valenciana
Conditions	Primary Pterygium, Astigmatism
Enrollment	78 participants
Start Date	2013-04-01
Primary Completion	2015-03-01 (estimated)
Study Completion	2015-03-01 (estimated)
Updated on ClinicalTrials.gov	2026-08-03