Kornea Kroslink Sonrası Kullanılan İki Farklı Tip Bandaj Kontakt Lensin Karşılaştırılması

Abstract

Objective: To compare the efficiacy of two types of silicone hydrogel bandage contact lenses (BCLs) after corneal collagen crosslinking (CXL) in keratoconus patients. Material and Methods: In this prospective study, 36 keratoconus patients received CXL in both eye. Each patient received a BCL composed of balafilcon A (Pure Vision; Bauch&Lomb) (14.0 diameter, 8.6 base curve) in 1 eye and lotrafilcon B (Air Optix Aqua; Ciba Vision) (14.2 diameter, 8.6 base curve) in the fellow eye. Patients were masked to the lens type in each eye. Postoperative medication regimen was the same with both eye. Epithelial defect size, contact lens debris, conjunctival and limbal hyperemia, reepithelization and responses to a subjective-comfort questionnaire were assessed postoperatively at 1, 3, and 5 days. A paired Student's t test and chi-square tests were used when appropriate. Results: Seventy-two eyes of 36 keratoconus patients who underwent CXL were analyzed. There was no statistically significant difference in epithelial defect size, conjunctival or limbal hyperemia between the 2 lenses at any postoperative visit. Three days postoperatively, re-epithelization was complete in 77.8% of eyes (28 eyes) in the balafilcon A group and 83.3% of the eyes (30 eyes) in the lotrafilcon B group. Lens deposition and patient discomfort was significantly higher with the balafilcon A group 5 days postoperatively (p<0.01 for both comparisons). Conclusion: There were no differences in corneal re-epithelization between the 2 types of BCLs (p>0.01). However, lens deposition and patient discomfort was higher with balafilcon A (p<0.01).