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You can access this
clinical trial
if you have
and you are
over 18
years old
This is an observational trial.
You are contributing to medical knowledge about your condition.
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The purpose

The photorefractive keratectomy was the first correction mode refractive laser. It's a photo-ablation of a predetermined thickness of anterior corneal stroma. Debridement of epithelium can be done either mechanically (m-PRK) or by laser (trans-PRK). Trans-PRK has a lot of interests: facility and speed of procedure as well as suppression of human variable. Very good results are obtained by m-PRK. The aim of this study is to show equivalence or non inferiority of trans-PRK over conventional m-PRK in terms of safety and refractive efficiency

Locations near you

Unfortunately, there are no recruiting locations near you. Please check the list with all locations below.
Tris trial is registered with FDA with number: NCT02893592. The sponsor of the trial is Centre Hospitalier Régional Metz-Thionville and it is looking for 118 volunteers for the current phase.
Official trial title:
Efficiency, Predictability and Security of the Trans-epithelial Photorefractive Keratectomy (Trans-PRK) for Low and Medium Myopia and Astigmatism: Retrospective Study About 118 Eyes