Intrastromal Correction of Ametropia by a Femtosecond Laser - ISCAF

Technolas Perfect Vision GmbH0 个研究点目标入组 86 人开始时间: 2009年4月14日最近更新: 2024年8月19日

适应症

试验速览

暂无简介。

•age: > 18 years
•- stable distance refraction for at least one year (i.e. a maximum change of 0.5 D)
•- in the case of presbyopia: minimum near add +2D to + 4D
•- in the case of myopia or hyperopia (without astigmatism): minimal 1D and maximum 3D
•- in the case of myopia or hyperopia (with astigmatism):
•spherical equivalent of minimal 1D and maximum 3D
•- BSCVA of the eye to be treated >= 0.63
•- patients are willing and in such conditions to come to the follow-up exams
•- no further ocular pathologies

•- age: < 18 years
•- refraction less than +/- 1 D or higher than +/- 3 D (not valid for persbyopia patients)
•- minimal pachymetry of < 500µm
•- K-mean < 37 D or > 60 D
•- Difference (K-max minus K-min) > 5D
•- Difference cycloplegic refraction to subjective refrection more than 1 D (valid only for hyperopia correction)
•- patients with previous intraocular or corneal surgeries (e.g. post-LASIK or PRK patients). Examption: standard cataract surgery.
•- patients with one or more of the following ocular pathologies:
•> keratokonus
•> corneal scars
•> transplanted cornea
•> disorders of wound healing
•> glaucoma
•> epilepsia
•> nystygmus
•> lack of concentration
•> other complicated illnesses
•> diabetis mellitus
•> instable K-readings as a sign of instable cornea
•> weakness of connective tissue
•> sensitivity against the drugs used in the study
•> continous wearing of contact lenses before the pre-exam, and before the surgery. At least 14 days before these dates patients must abstain from wearing CL.
•> patients in pregnancy or during lactation
•> patients who take part in an other clinical trial

发起方