Keratometric Changes after Corneal Collagen Cross linking for Keratoconus.

ABSTRACT

Background: Keratoconus is an asymmetric, non- inflammatory, and progressive ectasia of the cornea that is characterized by the thinning, steepening, and central scarring of the cornea. Corneal collagen cross linking with riboflavin and ultraviolet light is an accepted procedure to stabilize keratoconus. This study is aimed at finding out keratometric changes after corneal collagen cross linking. Methods: A total of 30 patients were enrolled, 15 males and 15 females. They were subjected to corneal topography, refraction, slit lamp examination, preoperatively and post operatively at 1 month 3rd moth and 6th month after corneal collagen cross linking. Results: Flattening of Keratometry values were noticed in 12 eyes (40%). The mean pre-operative K was 50.32 D. The mean post-operative K was 49.61 D. In 5 eyes (16.66%) the corneal curvature was unchanged and stable. Conclusion: There is significant decrease in mean keratometric values and flattening of cornea after corneal collagen cross linking.