Health Condition 1: O- Medical and Surgical Health Condition 2: H188- Other specified disorders of cornea
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1-Subjects seeking refractive surgery between 20 to 40 y of age with refractive errors that had been stable for at least one year 2-with a spherical equivalent between -1.00 to -8.00 diopters and less than -4.00 cylindrical astigmatism 3-normal corneal topography 4-without other eye diseases.
Exclusion criteria
Exclusion criteria: 1-Patients unable to attend follow up visits 2-patients with previous eye surgery, or eye diseases that could alter the tear film 3-patients with systemic diseases and using drugs that could interfere with tear production
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| to analyze the effect of various refractive surgeries( PRK SBK AND FEMTO LASIK ) on tear filmTimepoint: pre operatively 1 week post operatively and 1 month post operatively | — |
Secondary
| Measure | Time frame |
|---|---|
| Tear film analysis among photorefractive keratectomy , sub bowmans laser insitu keratomileusis and femtosecond assisted laser insitu keratomileusis preoperatively and post operativelyTimepoint: pre operatively 1 week post operative and 4 weeks post operatively | — |
Countries
India
Contacts
SANKARA EYE HOSPITAL