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The effect of the YK lens in keratoconus
Author(s) -
Kang Young Seok,
Park Young Kee,
Lee Jong Soo,
Lee Seung Uk,
Shin Jong Hun,
Han Young Sang,
Lee Dong Jun,
Choi Hee Young,
Oum Boo Sup,
Lee JiEun
Publication year - 2010
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1111/j.1475-1313.2010.00724.x
Subject(s) - keratoconus , contact lens , visual acuity , ophthalmology , medicine , optometry , lens (geology) , corneal topography , optics , cornea , physics
Purpose: To report the clinical results of the use of the YK contact lens (Lucid Co., Seoul, Korea) for keratoconus. Methods: One hundred and twenty nine keratoconic eyes were fitted with a YK lens which has one base curve and three peripheral curves. A light feather touch fluorescein pattern was obtained based on topographic indices. Visual acuity, comfort, mean wearing time, and ocular tissue changes were evaluated. Mean follow up was 17.5 ± 13.8 months (range 6–75). Results: One hundred and twenty six (97.6%) eyes tolerated the contact lenses. A total of 94.5% of the eyes achieved a visual acuity of 20/40 or better (average 0.79 ± 0.21), and flatter base curve radius (BCR) was related to better visual acuity. One hundred and seventeen (90.7%) eyes reported that the lenses were comfortable. Mean wearing time was 12.1 h per day (range 4–18). Changes in keratometric values were not significant between baseline and final follow‐up visit. Conclusions: The YK lens can provide successful visual outcome, with comfort, and no significant influence on the progression of keratoconus.