Status:
UNKNOWN
Corneal High Order Aberrations After Stream Light and Mechanical Photorefractive Keratectomy
Lead Sponsor:
Assiut University
Conditions:
Compare Corneal High Order Aberrations Before and After Stream Light Trans-PRK and Mechanical Photorefractive Keratectomy
Eligibility:
All Genders
20-40 years
Brief Summary
Compare corneal high order aberrations before and after stream light trans-PRK and mechanical photorefractive keratectomy including third order aberrations; Trefoil and coma aberrations and forth orde...
Detailed Description
Laser technology has played an important role in promoting the development of ophthalmology, especially corneal refractive surgery.1 Trans-epithelial photorefractive keratectomy (Trans-PRK) has become...
Eligibility Criteria
Inclusion
- • Stable refraction for 1 year (refraction does not exceed 1D more than the last prescribed glasses).
- Discontinuation of soft contact lens wears at least 1 week before examination.
- Topography criteria:
- Corneal thickness equal or more than 470 um
- Symmetrical bow-tie
- Back elevation not more than +12
- Normal Belin\\Ambrosio Enhanced ectasia display
- Spherical equivalent not more than -6D.
Exclusion
- • Previous ocular surgery
- Concurrent ocular pathology; corneal scar, corneal dystrophy
- Systemic disease; Uncontrolled diabetes, collagen disease
- Post-operative complications; sub-epithelial haze.
Key Trial Info
Start Date :
November 1 2023
Trial Type :
OBSERVATIONAL
Allocation :
ESTIMATED
End Date :
October 1 2025
Estimated Enrollment :
60 Patients enrolled
Trial Details
Trial ID
NCT06110286
Start Date
November 1 2023
End Date
October 1 2025
Last Update
October 31 2023
Active Locations (1)
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1
Assiut university faculty of medicine
Asyut, Assiut University, Egypt, 71515