What Happens During Corneal Crosslinking?
The science behind corneal crosslinking is remarkable. It has been discovered that a certain wavelength of UV light combined with riboflavin (vitamin B2) can add bonds between bundles of collagen fibers in the cornea. This change induced by the procedure, strengthens the fibers of the cornea, making it more rigid and allowing the weakened area to stabilize. Corneal crosslinking is the only treatment that has been shown to halt or slow the progression of keratoconus. There is no other treatment to stop the disease from getting worse.
Dr. Hill uses only safe, FDA-approved products and techniques. Crosslinking can be done in our Hill Vision Services office and takes anywhere from one hour to 90 minutes to complete. Typically, the procedure is done one eye at a time.
To begin, you’ll receive numbing drops in your eye and a medication to calm you. Both will ensure that you will remain comfortable throughout the procedure.
Once the anesthetic drops have numbed your eye, the epithelial surface, sometimes referred to as the “skin” of your cornea, will be painlessly removed.
Riboflavin drops are placed in the eye every 2 minutes. After about 30 minutes, when the riboflavin has had an opportunity to penetrate the tissues of your cornea, you will lay back in a chair and look up at a bright light. A small and relatively comfortable device will be used to hold your eyelids open so that you won’t have to worry about blinking during the procedure. The Avedro KXL UV lamp will target a controlled amount of a specific type of UV light onto the cornea. This machine is the only technology of its kind to be FDA-approved for this use.
After exposure to UV light for 30 minutes, Dr. Hill will place a special contact lens in your eye to protect it as it heals. You will also receive a prescription for anti-inflammatory drops and topical antibiotic eye drops.
The numbing drops will make the crosslinking procedure itself a comfortable experience. Dr. Hill and his staff will continue to talk with you every step of the way so that you don’t have to feel anxious about the process. Before you know it, the procedure will be complete and, after a brief evaluation and instruction, you will be free to leave with a designated driver.
What Happens After a CXL Procedure?
Following crosslinking, you will likely feel discomfort once the numbing drops wear off. Most patients report a burning sensation, or feel as if something is stuck in their eye. As tempting as it feels, it is important to avoid rubbing the eye. Artificial tears and pain relievers can ease your discomfort.
Call Dr. Hill right away if you experience severe or sudden pain, or if your lens falls out or becomes dislodged. Do not try to replace a displaced lens yourself.
Vision will be blurry as the cornea heals, it is not unusual for vision to become worse or for eyes to become more sensitive to light for about 1 month following a KXL procedure.
Though the goal of crosslinking is to stop the progression of disease, some patients report that their vision does improve over time, most often due to the cornea returning to a more natural shape. Many people find that they need new glasses or contact prescriptions following crosslinking because their vision has noticeably changed.
Does Crosslinking Cure Keratoconus?
Corneal crosslinking halts the progression of keratoconus. It does not repair the damage that has already been done. It can help you to avoid a cornea transplant, however, which is a significant benefit.
Is Corneal Crosslinking Safe?
Like any medical procedure, corneal crosslinking comes with risk of infection, and the possibility that your unique body may not heal or react predictably to the treatment. Dr. Hill will review any potential risks or undesired outcomes during your consultation.
Risks can’t be avoided, but they can be mitigated, which is why it is important to consult an ophthalmologist who is experienced in and dedicated to proper diagnosis and treatment for keratoconus and related eye diseases.
Dr. Hill will thoroughly assess your individual situation, including any health issues that may impair the healing process or put you at undue risk for infections or complications. Some risk factors include, but are not limited to, uncontrolled diabetes or autoimmune disease, as well as an advanced level of corneal diseaset.
Prior to undergoing treatment, Dr. Hill will assess all of the information needed to ensure you are a good candidate, and to help you make an informed decision regarding the future of your vision and the health of your eyes.