Collagen Crosslinking With Ultraviolet-A in Asymmetric Corneas (2)

Collagen Crosslinking With Ultraviolet-A in Asymmetric Corneas

To evaluate the efficacy of ultraviolet-A (UVA)-induced cross-linking of corneal collagen (CXL) as a method to increase the biomechanical and biochemical stability of the cornea by inducing additional cross-links within or between collagen fibers using UVA light and the photo- mediator riboflavin. The purpose of this study is to generate data for presentation at medical meetings and for peer-review publication

Inclusion Criteria:

• 8 years of age or older
• Diagnosis of keratoconus, post-LASIK ectasia, or pellucid marginal degeneration or forme fruste pellucid marginal degeneration.
• Diagnosis of FFKC
• History of Radial Keratotomy with fluctuating vision.
• Ability to provide written informed consent
• Likely to complete all study visits
• Minimum corneal thickness of at least 300 measured by ultrasound or Pentacam

Exclusion Criteria:

• Severe corneal scarring that markedly affects vision
• Contraindications to any study medications or their components
• Pregnancy or breast feeding
• Active Herpes Corneal Disease