Photorefractive Keratectomy (PRK) for Hyperopia After Radial Keratotomy

This study has been completed.
Information provided by:
University of Sao Paulo Identifier:
First received: June 9, 2009
Last updated: NA
Last verified: June 2009
History: No changes posted

To assess the efficacy, predictability, stability and safety of corneal wavefront-guided photorefractive keratectomy (PRK) for correcting hyperopia and astigmatism after radial keratotomy (RK).

Condition Intervention
Procedure: Photorefractive keratectomy

Study Type: Interventional
Study Design: Endpoint Classification: Safety/Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Corneal Wavefront-Guided PRK With Adjunctive Mitomycin-C for the Treatment of Hyperopia After Radial Keratotomy

Further study details as provided by University of Sao Paulo:

Enrollment: 36
Study Start Date: February 2008
Study Completion Date: June 2009
Primary Completion Date: June 2009 (Final data collection date for primary outcome measure)

Ages Eligible for Study:   30 Years to 70 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Hyperopia or hyperopic astigmatism with spherical equivalent of up to + 9,25 D and astigmatism of up to - 4,5 D;
  • Uncorrected Visual Acuity of 20/40 or worse;
  • Best-Corrected Visual Acuity of 20/60 or better.

Exclusion Criteria:

  • Systemic or ocular conditions that could bias results
  • Previous photorefractive surgery
  Contacts and Locations
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No Contacts or Locations Provided
  More Information

No publications provided by University of Sao Paulo

Additional publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Prof. Newton Kara-José, MD, University of Sao Paulo Identifier: NCT00917657     History of Changes
Other Study ID Numbers: 1183/07
Study First Received: June 9, 2009
Last Updated: June 9, 2009
Health Authority: Brazil: National Committee of Ethics in Research

Keywords provided by University of Sao Paulo:
photorefractive keratectomy
radial keratotomy
refractive surgery

Additional relevant MeSH terms:
Eye Diseases
Refractive Errors processed this record on October 06, 2015