ArticleInternational ophthalmology2026
AS-OCT assessment of limbal epithelial thickness at 12 months after pterygium surgery: a comparison of conjunctival limbal autograft and conjunctival flap techniques.
Article in International ophthalmology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeTo compare postoperative limbal epithelial thickness (LET) measured by anterior segment optical coherence tomography (AS-OCT) following conjunctival limbal autograft (CLAU) and conjunctival flap (CF) surgery in patients with primary grade 3 pterygium.
methodsThis retrospective comparative study included 42 patients with primary grade 3 pterygium who underwent either CLAU (n = 21) or CF (n = 21). At 12 months postoperatively, AS-OCT was used to measure LET together with peripheral and central corneal epithelial and stromal thicknesses. Corresponding healthy fellow eyes served as controls. Secondary outcomes included best-corrected visual acuity (BCVA), operative duration, and recurrence. Between-group and within-group comparisons were performed using appropriate statistical tests.
resultsMean postoperative LET was 61.33 ± 2.41 µm in the CLAU group and 62.81 ± 5.86 µm in the CF group, with no significant difference between groups (p = 0.141). LET did not differ significantly between operated and fellow eyes in either group. Likewise, peripheral and central corneal epithelial and stromal thicknesses were comparable between operated and fellow eyes and showed no significant differences between surgical techniques. BCVA and recurrence rates were similar in both groups, whereas operative duration was significantly shorter in the CF group (23.90 ± 1.67 vs. 40.29 ± 2.98 min, p < 0.001). No intraoperative or postoperative complications or recurrences were observed during the 12-month follow-up.
conclusionsAt the 12-month postoperative evaluation, CLAU and CF demonstrated similar AS-OCT-based limbal epithelial thickness and corneal structural measurements. Although CF required a significantly shorter operative time, these findings should not be interpreted as evidence of equivalence between the two techniques. Larger prospective studies with serial postoperative AS-OCT assessments are warranted.
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