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
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

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 July 23, 2014