FP1069 : TO EVALUATE THE EFFICACY OF CONTACT-LENS ASSISTED CXL IN THIN CORNEAS

Dr.Simmy Chaudhary, S21496

Purpose:To evaluate changes in intra-operative pachymetry, steep keratometry and assess demarcation line at 6months, in thin cornea undergoing riboflavin soaked contact-lens assisted CXL(CACXL).

Method:20 keratoconus patients with pachymetry<440µm underwent CACXL with riboflavin0.1% in dextran. Intra-operative functional corneal thickness(de-epithelialized cornea+riboflavin+contact lens) was measured. Demarcation line and steep keratometry evaluated at 6months. Result:Mean pre-operative corneal thickness was 424±10µ and mean increase in intra-operative corneal thickness with contact lens was 98.2±9.9µ(p<0.05). Demarcation line seen at 240±25µ with statistically insignificant change in mean keratometry(p>0.05) at 6months. No endothelial cell loss noted.

Conclusion:With contact lens, increased intra-operative corneal thickness protected corneal endothelium. Post-operative demarcation line at an adequate depth and no increase in steep keratometry signifies the efficacy of this procedure.