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Photorefractive keratectomy with collagen cross linking in forme fruste/ stable keratoconus

Poster Details

First Author: A.Bansal INDIA

Co Author(s):    R. Reddy              

Abstract Details


To report the efficacy and safety of PRK combined with collagen cross linking in cases of forme fruste and stable keratoconus.


Cornea, cataract and Refractive surgery service, Centre for sight, Hyderabad, India.


Three patients ( 6 eyes) of forme fruste keratoconus and three ( 6 eyes) of stable non progressive keratoconus underwent PRK with Mitomycin-C application using a Visumax laser combined with collagen cross linking procedure using Dresden's protocol with epithelium off technique. Mean age of the patients was 28 +/- 7.4 years, mean preop spherical equivalent was -4.65 D +/- 2.34 and mean pre op cylinder was -2.94 +/- 1.2. Mean followup was 9.4 months


Epithelium healed in an average period of 3.9 days. 8 eyes achieved unaided visual acuity of 6/6, while all eyes were 6/9 or better. 8 eyes showed superficial haze of varying degree at 3 months, however at the end of 6 months only 2 eyes showed trace haze. Mean post operative refraction (sph.eq.) was within +/- 0.5 D of emmetropia in 10 eyes at 4 weeks postop. There was no regression seen till the last followup in any of the eyes. No patient complained of glare or night vision problems.


PRK combined with collagen cross linking is a safe and effective procedure to correct the refractive errors in cases of forme fruste keratoconus and stable non progressive keratoconus.

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