Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2010
The effect of the YK lens in keratoconus.
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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 Ji-Eun
Аннотация
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.
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.