0.25 μm的患者43例(84眼),隨機分為選Corneal-WA TPRK組21例(41眼)和無消像" />
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【摘要】 目的:評價選擇性慧差引導經上皮準分子激光角膜切削術(selective coma-guided trans-epithelial photorefractive keratectomy,Corneal-WA TPRK)在矯正初始眼非對稱角膜散光方面的臨床療效。方法:本研究為前瞻性隨機對照研究。挑選術前角膜形態對稱性不佳、角膜慧差>0.25 μm的患者43例(84眼),隨機分為選Corneal-WA TPRK組21例(41眼)和無消像差引導的經上皮準分子激光角膜切削術(Aberration-Free TPRK)組22例(43眼)。對比兩組術后1、3、6個月的裸眼視力,角膜慧差及術后6個月的對比敏感度。結果:術后1、3、6個月,兩組裸眼視力比較差異無統計學意義(P>0.05)。術后1、3、6個月,Corneal-WA TPRK組角膜慧差均明顯低于Aberration-Free TPRK組,差異均有統計學意義(P<0.05)。術后6個月,Corneal-WA TPRK組3、6、12 c/d空間頻率對比敏感度均明顯高于Aberration-Free TPRK組,差異均有統計學意義(P<0.05)。結論:Corneal-WA TPRK有較高的有效性、安全性和可預測性,術后角膜慧差更少,對比敏感度更好,能顯著提升視覺質量。
【關鍵詞】 近視 散光 經上皮準分子激光角膜切削術 角膜波前像差 對比敏感度
doi:10.14033/j.cnki.cfmr.2020.12.003 文獻標識碼 A 文章編號 1674-6805(2020)12-000-04
Study on Correction of Initial Asymmetric Corneal Astigmatism by Selective Coma-guided Trans-epithelial Photorefractive Keratectomy/SHI Zhicheng, PENG Chao, LIANG Cuiping, LYU Shunhuan, LUO Xiaoliu, LIU Yuai. //Chinese and Foreign Medical Research, 2020, 18(12): -9
[Abstract] Objective: To evaluate the clinical effect of selective coma-guided trans-epithelial photorefractive keratectomy (Corneal-WA TPRK) in correcting initial asymmetric corneal astigmatism. Method: This was a prospective randomized controlled study. Forty-three cases (84 eyes) with asymmetric corneal astigmatism and coma>0.25 μm before operation were randomly assigned to the Corneal-WA TPRK group 21 cases (41 eyes) and the aberration-free trans-epithelial photorefractive keratectomy (Aberration-Free TPRK) group 22 cases (43 eyes). The uncorrected visual acuity and corneal coma at 1, 3 and 6 months after operation and the contrast sensitivity at 6 months after operation of the two groups were compared. Result: At 1, 3 and 6 months after operation, the uncorrected visual acuity of the two groups were compared, and the difference was not statistically significant (P>0.05). At 1, 3 and 6 months after operation, the corneal coma in the Corneal-WA TPRK group were significantly lower than those of the Aberration-Free TPRK group, and the differences were statistically significant (P<0.05). At six months after operation, the contrast sensitivity of spatial frequencies in 3, 6 and 12 c/d in the Corneal-WA TPRK group were significantly higher than those of the Aberration-Free TPRK group, and the differences were statistically significant (P<0.05). Conclusion: Corneal-WA TPRK has higher effectiveness, safety and predictability, less corneal coma, better contrast sensitivity and significantly improved visual quality.
[Key words] Myopia Astigmatism Trans-epithelial photorefractive keratectomy Corneal wavefront aberration Contrast sensitivity
First-authors address: Jiangmen Central Hospital, Jiangmen 529030, China
在屈光不正矯正領域中,Trokel等[1]于1983年首先開展準分子激光屈光角膜切削術(photorefractive keratectomy,PRK)矯正屈光不正。1993年北京協和醫院首先引進PRK,在中國已經過近30年的發展,且已有數百家屈光手術中心。PRK手術設備和手術方式的設計也經歷了一系列的演變。在2008年,德國Schwind公司率先推出切削頻率為500 Hz的阿瑪仕準分子激光手術系統,其獨特的經上皮準分子激光角膜切削術(TPRK)具有極高的技術水平。自2009年,阿瑪仕準分子激光手術系統進入中國,經過10年應用和推廣,TPRK已成為表層角膜激光屈光手術的優秀代表,是矯正成人屈光不正的主流方式之一。阿瑪仕的經上皮全準分子激光角膜切削術(TPRK)具有無刀、無瓣、無負壓、無接觸的獨特優勢,手術的安全性和可預測性極高,使得角膜表層激光屈光手術能夠回歸和普及[2-3]。選擇性慧……