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ORIGINAL ARTICLE
Year : 2009  |  Volume : 57  |  Issue : 2  |  Page : 111-114

Corneal collagen cross-linking with riboflavin and ultraviolet - A light for keratoconus: Results in Indian eyes


Clear Vision Eye Center, 1A, Ashoka, 15, S.V. Road, Santacruz (W), Mumbai - 400 054, India

Correspondence Address:
Vinay B Agrawal
Clear Vision Eye Center, 1A, Ashoka, 15, S.V. Road, Santacruz (W), Mumbai 400 054
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0301-4738.44515

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Aim: To assess the results of corneal collagen cross-linking with riboflavin using ultraviolet - A light for keratoconus at one year in Indian eyes. Materials and Methods: Sixty-eight eyes of 41 patients with progressive keratoconus were included in this retrospective study. All eyes completed was 12 months of follow-up and 37 eyes had a one-year follow-up. The maximum follow-up was 16 months. Ocular examinations including refraction, best corrected visual acuity (BCVA), corneal topography, were recorded at each visit. Results: The mean age was 16.9 3.5 years (range 12-39 years) and the mean follow-up was 10.05 3.55 months (range six to 16 months). Thirty seven eyes with a follow-up of at least 12 months were analyzed. The preoperative values on the day of treatment were compared with postoperative values of the 12-month examination. This showed that BCVA improved at least one line in 54% (20/37) of eyes and remained stable in 28% (10/37) of eyes ( P =0.006). Astigmatism decreased by a mean of 1.20 diopter (D) in 47% (17/37) of eyes ( P =0.005) and remained stable (within 0.50 D) in 42% (15/37) of eyes. The K value of the apex decreased by a mean of 2.73 D in 66% (24/37) of eyes ( P =0.004) and remained stable (within 0.50 D) in 22% (8/37) of eyes. The maximum K value decreased by a mean of 2.47 D in 54% (20/37) of eyes ( P =0.004) and remained stable (within 0.50 D) in 38% (14/37) of eyes. Corneal Wavefront analysis revealed that spherical and higher-order aberrations did not show significant variations in the follow-up period. The coma component showed a very significant reduction at six months after treatment and persisted throughout the follow-up period ( P =0.003) Conclusion: The results show a stabilization and improvement in keratoconus after collagen cross-linking in Indian eyes. This suggests that it is an effective treatment for progressive keratoconus.


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