Femtolasik Topography-guided by Contoura Method Versus Customized by Asphericity in Contralateral Eyes: A Prospective Double-blind Randomized Study

Hospital de Olhos - Oftalmax0 个研究点开始时间: 2020年3月2日最近更新: 2023年5月29日

适应症

试验速览

暂无简介。

•Patients of both sexes aged 20-35 years (avoiding possibly presbyopia patients), myopic with or without astigmatism, with stable refractive error for at least 1 year and visual acuity corrected away from 0.1 logMAR or better. The myopia may vary between -0.50 and -8.00 diopters (D) and the astigmatism between 0.00 and -3.00 cylindrical diopters (CD), with maximum spherical equivalent of 8.00D.

•Patients with significant anisometropia, that is a refractive difference of 1 spherical diopter or 0.75 cylindrical diopters between the eyes, will be excluded from the study. Other exclusion criteria will be: presence of clinical signs of dry eye, abnormalities of the anterior segment - such as cataracts, scars or corneal neovascularization within 1.0 mm of the desired ablation zone, epithelial basement membrane disease, history of recurrent corneal erosions, progressive or unstable myopia, PAT (percentage of altered tissue) calculation above 35% of the corneal thickness at its finest point in the ablation calculation19,24, pachymetry below 500, suspected keratoconus in its subclinical or stablished form, macular or retinal disease, diagnosis of glaucoma or ocular hypertension, current use of systemic corticosteroids or immunosuppressive therapy, collagen diseases, vascular diseases, diabetes mellitus types I and II, pregnancy and breastfeeding. The patient who presents any type of intraoperative intercurrence will be excluded from the study.

发起方

Hospital de Olhos - Oftalmax