(Press-News.org) Teaneck, NJ – The Cornea and Laser Eye Institute, with Principal Investigator, Peter S.
Hersh M.D., is conducting a research study to study the safety and effectiveness of corneal
collagen crosslinking (CXL) using Riboflavin/Dextran and Hypotonic Riboflavin in
patients with progressive keratoconus and corneal ectasia.
Keratoconus is a disease of the cornea, the clear front lens of the eye (like the crystal on a
watch), that occurs in the overall population at a rate of about one in 2000. It usually
begins in the teens and 20's and can worsen over time. It is often discovered when vision
cannot be properly corrected with glasses. Keratoconus results in thinning of the corneal
tissues. Consequently, the cornea bulges out of its smooth, clear, dome-like structure, and
assumes a more conical and irregular configuration. Because of this change in shape, the
cornea loses its ability to form a clear image in the eye and the patient's vision can
decrease drastically. Treatments include specialty keratoconus contact lenses and corneal
inlays. However, the keratoconus cornea can continue to bulge over time and some
keratoconus patients ultimately may require corneal transplantation to regain vision.
Corneal collagen crosslinking (CXL) using ultraviolet light combined with riboflavin
(Vitamin B2) is an investigational procedure designed to strengthen the cornea and decrease the
progression of keratoconus. CXL is an investigational procedure and is not approved for use in the United States. However, here at the CLEI Center for Keratoconus, we are participating in a research study of CXL. The goal of the study is to assess the safety and efficacy of crosslinking for the treatment of keratoconus as well as corneal ectasia after LASIK. If successful, CXL may decrease progression of keratoconus and maintain the patient's vision over time.
During the crosslinking procedure, anesthesia drops are administered. The surface
epithelial cells of the cornea are then removed and riboflavin drops are administered for
30 minutes. The riboflavin acts both to enhance the crosslinking effect and to protect the
rest of the eye from the UV exposure.
The patient then looks at a UV emitting light for 30 minutes. At the conclusion of the
procedure, a soft contact lens bandage is applied. The contact lens is left in place to
improve healing for approximately 5 days and is then removed. Antibiotic and anti-inflammatory
drops are used for two weeks afterwards.
INFORMATION:
Dr. Hersh, a cornea and refractive surgery specialist in Teaneck, NJ, founded the Cornea
and Laser Eye Institute in 1995, and its specialty CLEI Center for Keratoconus in 2002.
Dr. Hersh is also Clinical Professor of Ophthalmology and Director of Cornea and
Refractive Surgery at UMDNJ-New Jersey Medical School, and Visiting Research
Collaborator at Princeton University.
For more research study information please call 201-883-0505
Investigational eye treatment: Corneal collagen crosslinking research study
2010-09-21
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