Corneal ectasia is an abnormal thinning of the cornea. The cornea is a transparent tissue covering the front of your eye and helps to focus light entering your eye.
A healthy cornea is essential to maintain clear vision. Although rare, corneal ectasia is a sight-threatening condition that can cause permanent damage to the eye.
There are several causes of c, including:
Post-surgical complication of , but it can cause severe vision problems. Before surgery, your eye surgeon performs a variety of tests to assess if you are a suitable candidate for the procedure.is a rare
These are some factors that influence your risk for post-surgical, including:
If the surgeon determines you are at a higher risk for corneal ectasia after LASIK surgery, they may recommend an alternative procedure or no surgery altogether.
After eye surgeon will follow up with you over several visits to ensure your eyes are healing properly. These are some potential signs and symptoms of post- :treatment, your
The following tests can help determine if you have:
If your doctor determines you have eyes as much as possible., there are several treatment options available. They may also recommend that you avoid rubbing your
Studies show that excessive eye rubbing can contribute to .
Treatments range from conservative to invasive, and may include:
For mild cases of vision correction. However, most patients still notice blurry or distorted vision with glasses, especially if they have irregular astigmatism.that are not progressive, glasses may provide some
These contact lenses offer better visual quality than soft contacts since they can compensate for irregular astigmatism. They include rigid gas permeable lenses, scleral lenses, and hybrid lenses (combination lenses with a rigid portion in the center and a soft skirt on the edges).
This procedure treats post-surgical keratoconus and pellucid marginal degeneration. Collagen cross-linking works by strengthening and stabilizing the cornea to slow down corneal thinning., along with
These are small, crescent-shaped implants that are placed into the cornea to flatten out an abnormally steep cornea. This is an effective way to improve irregular astigmatism. Some surgeons combine this procedure with collagen cross-linking, as some studies show added benefits.
This type of surgery, also called keratoplasty, includes penetrating (full-thickness) or lamellar (partial-thickness). A penetrating keratoplasty replaces the entire cornea. Lamellar keratoplasties replace the front and middle layers of the cornea.
Most surgeons prefer lamellar keratoplasties for treating if the back layer of the cornea is healthy. These procedures are more invasive than other treatments. Surgeons typically reserve corneal transplants for when other treatments fail, or if the ectasia is severe.
Bromley, Jennifer G, and J Bradley Randleman. “Treatment Strategies for Corneal Ectasia.” Current Opinion in Ophthalmology, vol. 21, no. 4, July 2010, pp. 255–258., doi:10.1097/icu.0b013e32833a8bfe.
Coskunseven, Efekan, et al. “Effect of Treatment Sequence in Combined Intrastromal Corneal Rings and Corneal Collagen Crosslinking for Keratoconus.” Journal of Cataract & Refractive Surgery, vol. 35, no. 12, Dec. 2009, pp. 2084–2091., doi:10.1016/j.jcrs.2009.07.008.
Fan, Rachel, et al. “Applications of Corneal Topography and Tomography: a Review.” Clinical & Experimental Ophthalmology, vol. 46, 2018, pp. 133–146., doi:10.1111/ceo.13136.
Garcia-Ferrer, Francisco J., et al. “Corneal Ectasia Preferred Practice Pattern.” Ophthalmology, vol. 126, no. 1, 2019, pp. P170–P215., doi:10.1016/j.ophtha.2018.10.021.
Gordon-Shaag, Ariela, et al. “The Genetic and Environmental Factors for Keratoconus.” BioMed Research International, vol. 2015, 17 May 2015, pp. 1–19., doi:10.1155/2015/795738.
Wolle, Meraf A., et al. “Complications of Refractive Surgery: Ectasia after Refractive Surgery.” International Ophthalmology Clinics, vol. 56, no. 2, 2016, pp. 129–141., doi:10.1097/iio.0000000000000102.