Simultaneous pHototherapeutic Keratectomy and corneAl Collagen cRosslinking in Eyes With Keratoconus: a Randomized Trial (SHARK)
The goal of this clinical trial is to compare CXL with combined treatment with CXL and t-PTK.

The main questions it aims to answer are whether combined treatment can give better visual acuity and if the treatments are equally safe.
- EligibilityCriteria: Inclusion Criteria:  Patients must be 18 years or older at the time of signing the informed consent form. There is no upper age limit. Progressive keratoconus with indication for CXL Corneal thickness ≥ 420 μm  Exclusion Criteria:  Other eye disease causing visual impairment - HealthyVolunteers: No - Gender: All - MinimumAge: 18 Years - StdAgeList: Adult, Older Adult