Keratoconus occurs when the cornea gradually thins and changes from a rounded shape to a more cone-like shape. As the cornea changes, vision may become increasingly distorted. Corneal cross-linking is designed to address this progression by strengthening the corneal tissue and helping stabilize its shape.
For individuals considering corneal cross-linking in Boston and Wellesley, MA, specialized corneal expertise is particularly important. At Kornmehl Laser Eye Associates, Ernest W. Kornmehl, M.D., F.A.C.S., is an internationally recognized Ophthalmologist and Laser Eye Surgeon with extensive experience treating corneal disease. He completed a Heed Fellowship in Corneal Surgery at Massachusetts Eye and Ear Infirmary/Harvard Medical School and currently serves as a Clinical Instructor at Harvard Medical School.
Why Does Keratoconus Progress?
The cornea contains collagen fibers that provide structural support. With keratoconus, the corneal tissue becomes weaker and progressively thins. This allows the normal pressure inside the eye to contribute to outward bulging of the cornea.
As its shape becomes increasingly irregular, the cornea can no longer focus incoming light as precisely. This may lead to blurred or distorted vision, increasing astigmatism, frequent prescription changes, glare, and other visual changes.
How Does Corneal Cross-Linking Strengthen the Cornea?
Corneal cross-linking targets the structural weakness associated with progressive keratoconus. During treatment, riboflavin (vitamin B2) is applied to the cornea. The cornea is then exposed to a carefully controlled amount of ultraviolet A (UVA) light.
This combination triggers a photochemical reaction that creates additional bonds, or “cross-links,” between collagen fibers within the cornea. Think of these additional connections as reinforcing the cornea’s existing structural framework.
The goal is not simply to temporarily correct blurry vision. Cross-linking is intended to increase corneal strength and reduce the likelihood that keratoconus will continue progressing.
Does Cross-Linking Improve Vision?
The primary purpose of corneal cross-linking is to stabilize the cornea rather than serve as a vision correction procedure. Some individuals may experience changes in vision or corneal shape after treatment, but these changes are not the main objective.
Glasses or specialty contact lenses may still be used to address refractive errors associated with keratoconus after the cornea has stabilized.
Why Does Timing Matter With Keratoconus?
Because cross-linking is intended to slow or stop progression rather than reverse advanced structural changes, identifying progressive keratoconus early can be valuable. Detailed corneal imaging and regular examinations allow an ophthalmologist to monitor changes in corneal thickness, curvature, and shape and determine whether treatment is appropriate.
Dr. Kornmehl’s advanced training in corneal surgery and decades of experience provide a strong foundation for evaluating and managing keratoconus. To learn whether corneal cross-linking may be appropriate, contact Kornmehl Laser Eye Associates in Wellesley, serving Boston and surrounding communities. Call (877) 870-2010 to schedule a consultation.