Best Paper of the Session & Col.Rangachari Contestant

Dr.POOJA KHAMAR

Prof.ROHIT SHETTY

Abstract

Purpose: To assess role of collagen distribution and Bowman layer thickness (BLT) in differentiating healthy from suspect corneas and devise an algorithmic approach to plan refractive surgery

Methods: 350 patients underwent topography, biomechanics (BM) and ultra-high-resolution polarisation-sensitive (PSOCT), generating collagen orientation maps and BLT to customize refractive surgery.

Results: Eyes with normal topography, BM, SpA1>95, healthy collagen orientation, uniform BLT, underwent LASIK/SMILE. Eyes with normal topography, borderline BM, SpA1<95, changes in collagen orientation and BLT, underwent PRK/SMILE Xtra. Eyes with normal topography, suspicious BM, SpA1<80-90, changes in collagen orientation, thin BLT, underwent ICL implantation. Patients showed no ectasia 3 years post-surgery. On AI-driven analytics, SpA1 and CBI correlated with collagen orientation changes.

Conclusion: Changes in collagen orientation may begin before those on imaging, and can be identified using PSOCT.

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