作者
Alfredo Vega-Estrada, Jorge L Alio, Luis F Brenner, Jaime Javaloy, Ana Belen Plaza Puche, Rafael I Barraquer, Miguel A Teus, Joaquim Murta, Jorge Henriques, Antonio Uceda-Montanes
发表日期
2013/3/1
期刊
American journal of ophthalmology
卷号
155
期号
3
页码范围
575-584. e1
出版商
Elsevier
简介
PURPOSE
To analyze the outcomes of intracorneal ring segment (ICRS) implantation for the treatment of keratoconus based on preoperative visual impairment.
DESIGN
Multicenter, retrospective, nonrandomized study.
METHODS
A total of 611 eyes of 361 keratoconic patients were evaluated. Subjects were classified according to their preoperative corrected distance visual acuity (CDVA) into 5 different groups: grade I, CDVA of 0.90 or better; grade II, CDVA equal to or better than 0.60 and worse than 0.90; grade III, CDVA equal to or better than 0.40 and worse than 0.60; grade IV, CDVA equal to or better than 0.20 and worse than 0.40; and grade plus, CDVA worse than 0.20. Success and failure indices were defined based on visual, refractive, corneal topographic, and aberrometric data and evaluated in each group 6 months after ICRS implantation.
RESULTS
Significant improvement after the procedure was …
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