Eye & contact lens · 2003
RK4 (reverse-geometry) contact lens fitting after penetrating keratoplasty.
Сравнительное исследованиеСтатьяНазвание и аннотация: Перевод пока не подготовлен
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Lin Jen-Chieh, Cohen Elisabeth J, Rapuano Christopher J, Laibson Peter R
Аннотация
PURPOSE: We evaluated the performance of the RK4 (reverse-geometry) contact lens in patients with flat central and steep peripheral corneal topography after penetrating keratoplasty (PK).
METHODS: A retrospective study was performed of post-PK patients fitted with RK4 lenses on the Cornea Service at Wills Eye Hospital, between March 2000 and February 2002.
RESULTS: Fifteen eyes of 13 post-PK patients were fitted with RK4 lenses and monitored for more than two months (range, 2.1-23.5 months; mean, 8.1 +/- 7.0 months). The average number of lens refits per eye was 1.0 +/- 1.2 (range, 0-4). Ninety-three percent (14/15) of the eyes that were fitted achieved at least 20/30 visual acuity, and 53% (8/15) of eyes achieved 20/20 visual acuity. A comparison of prefitted and post-fitted corrected visual acuity demonstrated a statistically significant improvement (P < 0.01). RK4 lenses were successfully worn full time or part time in all cases.
CONCLUSIONS: The RK4 lens can provide well-tolerated visual correction in cases with central flat, peripheral steep corneal contour following PK.
METHODS: A retrospective study was performed of post-PK patients fitted with RK4 lenses on the Cornea Service at Wills Eye Hospital, between March 2000 and February 2002.
RESULTS: Fifteen eyes of 13 post-PK patients were fitted with RK4 lenses and monitored for more than two months (range, 2.1-23.5 months; mean, 8.1 +/- 7.0 months). The average number of lens refits per eye was 1.0 +/- 1.2 (range, 0-4). Ninety-three percent (14/15) of the eyes that were fitted achieved at least 20/30 visual acuity, and 53% (8/15) of eyes achieved 20/20 visual acuity. A comparison of prefitted and post-fitted corrected visual acuity demonstrated a statistically significant improvement (P < 0.01). RK4 lenses were successfully worn full time or part time in all cases.
CONCLUSIONS: The RK4 lens can provide well-tolerated visual correction in cases with central flat, peripheral steep corneal contour following PK.