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Cross Linking
Corneal cross-linking is a simple medical procedure designed to strengthen the cornea. It is used to treat thin and weak corneas, such as those in patients with keratoconus or other corneal conditions, by reinforcing the collagen fibers that make up the cornea, thereby preventing further thinning and weakening of the corneal tissue.
Who Needs Corneal Cross-Linking?
Corneal cross-linking is recommended for patients with thin corneas that show signs of progression or risk of further thinning. The procedure is suitable for individuals suffering from keratoconus, autoimmune diseases, infectious corneal diseases, and even post-refractive surgery ectasia, where the cornea becomes thinner over time.
In keratoconus, the cornea gradually loses its natural shape and begins to bulge forward, forming a cone-like shape. Over time, the cornea becomes thinner, leading to irregular astigmatism, high myopia (nearsightedness), and continuous changes in the glasses prescription. If left untreated, the condition can lead to severe vision loss or blindness.
It is important to emphasize that this procedure is meant to strengthen and stabilize the cornea, not to improve vision. The main goal of cross-linking is to stop or slow down the progression of keratoconus or post-surgical ectasia. For some patients, cross-linking can prevent the need for more invasive surgery, such as corneal transplantation.
How is Corneal Cross-Linking Performed by Dr. Nasser?
Corneal cross-linking is a treatment, not a surgery. It is performed on an outpatient basis, and you can return home the same day. During the procedure, you will lie comfortably, and numbing eye drops will be applied so you feel no pain. Vitamin B2 (Riboflavin) drops are instilled onto the cornea for a few minutes, followed by exposure to a focused ultraviolet (UV) light beam for several minutes using a specialized medical device.
The UV light, combined with the Riboflavin drops, strengthens the corneal fibers and helps create new bonds between the collagen fibers, making the cornea more stable and resistant to further thinning. At the end of the treatment, a protective contact lens is placed on the eye to aid the healing process.
The entire procedure usually takes about 15 minutes per eye, and the contact lens typically remains in place for about one week. You will also receive antibiotic and steroid eye drops to promote healing and prevent infection.