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Corneal Asphericity Adjustment (Q Adjustment) in Myopic and Hyperopic Patients Undergoing Refractive Correction With Excimer Laser

This study has been completed.
Sponsor:
Information provided by:
Democritus University of Thrace
ClinicalTrials.gov Identifier:
NCT01296867
First received: February 15, 2011
Last updated: NA
Last verified: February 2011
History: No changes posted
  Purpose

To study the postoperative results in myopic and hyperopic eyes treated with two different laser ablation algorithms (STD and F-CAT), both FDA approved.


Condition
Myopia
Hyperopia

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective

Further study details as provided by Democritus University of Thrace:

Enrollment: 36
Study Start Date: March 2006
Study Completion Date: May 2009
Primary Completion Date: March 2009 (Final data collection date for primary outcome measure)
  Eligibility

Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population

Forty eight myopic (24 patients) and 24 hyperopic eyes (12 patients)

Criteria

Inclusion Criteria:

  • Myopic and hyperopic eyes eligible for LASIK or PRK refractive correction
  • Central corneal thickness more than 500 micrometers

Exclusion Criteria:

  • Topographies of less than 55% of successful total sampled area and eyes exhibiting asphericity variations, in either the horizontal or the vertical axis, greater than 0.2
  • Corneal scarring
  • Cataract surgery
  • Corneal ulceration
  • Topographical abnormalities
  Contacts and Locations
No Contacts or Locations Provided
  More Information

No publications provided

Responsible Party: Eleftherios Paschalis / PhD, Eye Institute of Thrace / Democritus University
ClinicalTrials.gov Identifier: NCT01296867     History of Changes
Other Study ID Numbers: Q-value
Study First Received: February 15, 2011
Last Updated: February 15, 2011
Health Authority: Greece: Ethics Committee

Keywords provided by Democritus University of Thrace:
Laser ablation algorithms
Excimer laser
Refractive correction
Corneal Asphericity Adjustment

Additional relevant MeSH terms:
Hyperopia
Myopia
Refractive Errors
Eye Diseases

ClinicalTrials.gov processed this record on May 16, 2013