- 作者：R. Donoso ; rodrigod@manquehue.net" class="auth_mail" title="E-mail the corresponding author ; C. Dí ; az ; P. Villavicencio
- 关键词：Keratoconus ; Lasik ; Penetrating keratoplasty ; Refractive error ; Astigmatism
- 刊名：Archivos de la Sociedad Española de Oftalmología (English Edition)
- 出版年：2015
- 出版时间：July 2015
- 年：2015
- 卷：90
- 期：7
- 页码：308-311
- 全文大小：476 K
Design
Retrospective cohort.
Method
Records of 14 consecutive patients (19 eyes) who had Lasik after PKP for KC were retrospectively reviewed. In all eyes with refractive stability and suture removed before Lasik, far distance Visual Acuity with (AVCC) and without correction (AVSC), spherical equivalent (EE), refractive (Ast) and keratometric (dK) astigmatism were analyzed pre- and post-operatively before and after one year of follow up. Data were analyzed using Shapiro–Wilk normality test, Student t test and Mann–Whitney test. A p-value of <0.05 was considered statistically significant.
Results
The mean follow-up time was 3.16 months for the follow-up before one year postoperative and 5.8 years for the follow-up after one year postoperative. The best spectacle corrected visual acuity of 0.11 LogMAR (DE 0.07) before Lasik remained stable throughout the study. The SE decreased from −2.6 (DE 3.53) to −0.36 D (DE 1.33) (p < .05) for the follow-up before one year postoperative and −1.28 D (DE 1.63) (p = .07) for the follow-up after one year postop. The refractive cylinder was reduced from −3.43 (DE 1.35) preoperative to −1.37 D (DE 1.24) (p < .05) and −3.21 D (DE 2.29) (p = .36) in the long term after one year of follow-up.
Conclusions
Lasik refractive results regress one year after the operation; therefore it is not an effective long-term surgical refractive procedure for residual refractive errors after PKP for KC.