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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:
ClinicalTrials.gov Identifier:
NCT01296867
First Posted: February 16, 2011
Last Update Posted: February 16, 2011
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by:
Democritus University of Thrace
February 15, 2011
February 16, 2011
February 16, 2011
March 2006
March 2009   (Final data collection date for primary outcome measure)
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No Changes Posted
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Corneal Asphericity Adjustment (Q Adjustment) in Myopic and Hyperopic Patients Undergoing Refractive Correction With Excimer Laser
Not Provided
To study the postoperative results in myopic and hyperopic eyes treated with two different laser ablation algorithms (STD and F-CAT), both FDA approved.
Not Provided
Observational
Observational Model: Cohort
Time Perspective: Prospective
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Non-Probability Sample
Forty eight myopic (24 patients) and 24 hyperopic eyes (12 patients)
  • Myopia
  • Hyperopia
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*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
36
May 2009
March 2009   (Final data collection date for primary outcome measure)

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
Sexes Eligible for Study: All
Child, Adult, Senior
Yes
Contact information is only displayed when the study is recruiting subjects
Not Provided
 
 
NCT01296867
Q-value
No
Not Provided
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Eleftherios Paschalis / PhD, Eye Institute of Thrace / Democritus University
Democritus University of Thrace
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Not Provided
Democritus University of Thrace
February 2011