Visual Outcomes of Topography Guided Photorefractive Keratectomy (PRK) for Treatment of Patients With Irregular Cornea

• Register: ClinicalTrials.gov
• Last refreshed on: 12 December 2020
• Main ID: NCT03140046
• Date of registration: 26/04/2017
• Prospective Registration: No
• Primary sponsor: Assiut University
• Public title: Visual Outcomes of Topography Guided Photorefractive Keratectomy (PRK) for Treatment of Patients With Irregular Cornea
• Scientific title: Visual Outcomes of Topography Guided Photorefractive Keratectomy (PRK) for Treatment of Patients With Irregular Cornea
• Date of first enrolment: March 1, 2017
• Target sample size: 20
• Recruitment status: Completed
• URL: https://clinicaltrials.gov/show/NCT03140046
• Study type: Interventional
• Study design: Allocation: N/A. Intervention model: Single Group Assignment. Primary purpose: Treatment. Masking: None (Open Label).
• Phase: N/A

Countries of recruitment

Egypt

Key inclusion & exclusion criteria

Inclusion Criteria:

- Patients with irregular corneal astigmatism caused by:

- Trauma.

- Non - Central Corneal Scars.

- Previous corneal surgery.

- With No other abnormalities in the eye.

- Patient is willing to enter the study and sign a consent.

Exclusion Criteria:

- Patients with central corneal scars.

- Patients with central haze interfering with visual acuity.

- Patients with ectasia at corneal graft margins.

- Patients with irregular astigmatism caused by corneal ectasia or keratoconus.

- Patients had refractive surgery with ablations leaving a residual corneal thickness
less than 250 µm.



Age minimum: N/A
Age maximum: N/A
Gender: All

Health Condition(s) or Problem(s) studied

Irregular Astigmatism

Intervention(s)

Procedure: photorefractive keratectomy (PRK)

Primary Outcome(s)

Visual Acuity [Time Frame: follow up after 1 day, 1 week, 1 month and 3 months]

Secondary Outcome(s)

Refractive State [Time Frame: follow up after 1 day, 1 week, 1 month and 3 months]

Secondary ID(s)

PRK

Source(s) of Monetary Support

Please refer to primary and secondary sponsors