Corneal thinning is an eye disease that occurs when the cornea (the front layer of the eye) gets thinner and bulges out. These changes result in a loss of visual acuity (sharpness of vision) that can make even simple daily tasks difficult. The thinning is believed to be a breakdown of the collagen, the protein fibres that give the cornea its shape, strength and flexibility. Keratoconus is the most common form of corneal thinning disorders.
Vision problems due to corneal thinning usually get worse with time. If glasses or contact lenses no longer help, patients may be referred for corneal transplant as a last option.
Health Quality Ontario Reviews Collagen Cross-Linking for Corneal Thinning Disorders
Collagen cross-linking is a relatively new treatment for some types of corneal thinning, such as keratoconus. The procedure involves applying riboflavin (vitamin B) drops to the eye and then exposing the eye to ultraviolet-A light. The treatment is intended to strengthen the cornea and prevent further thinning and bulging.
The Ministry of Health and Long-Term Care has accepted this recommendation.
The Ministry of Health and Long-Term Care has provided the following response: This procedure is currently implemented at one location and the Ministry will be looking to evidence from this pilot study to inform expansion.