Keratoconus Clinical Trial
Official title:
Study of Effectiveness and Safety of Transepithelial Collagen Cross-linking at Varying Fluence Levels.
This study will investigate the effectiveness in treating keratoconus, pellucid marginal degeneration and post LASIK iatrogenic ectasia utilizing fluence rates and treatment times of Corneal Cross Linking other than the original FDA approved protocol of 3mw/cm2.
Patient recruitment will include a patient population of 100 individuals from 15 years to 50 years old with established keratoconus, pellucid marginal degeneration or post-LASIK ectasia determined by keratography. A solution of transepithelial riboflavin .25% will be applied every three minutes for 30 minutes or until complete corneal penetration is observed. Then the cornea will be irradiated with UV light at fluence rates of 9mw/cm2 for 10 minutes or 18 mw/cm2 for 5 minutes. Post procedural evaluation will take place at day one, day 7 day 30, day 90, day 180 and day 365. Pretreatment keratography, uncorrected acuity, best corrected acuity will be compared at follow up days beginning on day 30. ;
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