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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
Hyperopia Procedure: Photorefractive keratectomy

Study Type: Interventional
Study Design: 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   (Adult, Senior)
Sexes Eligible for Study:   All
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
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

No Contacts or Locations Provided
  More Information

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

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

Additional relevant MeSH terms:
Refractive Errors
Eye Diseases processed this record on July 25, 2017