UnknownNot Applicable

Corneal High Order Aberrations After Stream Light and Mechanical Photorefractive Keratectomy

Egypt60 participantsStarted 2023-11-01

Plain-language 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 order aberrations; spherical aberrations

Who can participate

Age range

20 Years – 40 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * • 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 Criteria: * • Previous ocular surgery * Concurrent ocular pathology; corneal scar, corneal dystrophy * Systemic disease; Uncontrolled diabetes, collagen disease * Post-operative complications; sub-epithelial haze.

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Corneal high order aberrations measured before and after the intervention by corneal topography machine

Timeframe: 1 monthe after surgery

Trial details

NCT IDNCT06110286

SponsorAssiut University

Sponsor typeOTHER

Study typeOBSERVATIONAL

Primary completion2024-10-01

Contact for this trial

Esraa R Mokhtar, master

01064021834 esraarifaat89@gmail.com

View on ClinicalTrials.gov More Compare Corneal High Order Aberrations Before and After Stream Light Trans-PRK and Mechanical Photorefractive Keratectomy trials

Who can participate

Age range

20 Years – 40 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.