How do you treat post ectasia after LASIK?
Treating Post-Surgical Ectasia
The most effective way to treat post-surgical ectasia is with gas permeable (GP) scleral lenses. Unlike standard contact lenses, GP lenses are rigid. They maintain their shape on the eye, where soft lenses conform to the surface of the cornea.
What causes ectasia after LASIK?
Experts believe that post-LASIK ectasia is caused by removing too much corneal tissue during LASIK surgery. When this happens, the remaining corneal tissue, or “residual corneal bed,” ends up being too thin, in turn weakening the cornea and allowing it to bulge under normal eye pressure.
How common is corneal ectasia after LASIK?
Ectasia is a rare complication of corneal refractive surgery, occurring in just 0.04% to 0.6% of procedures. One large study found that 96% of cases of ectasia occurred as a result of LASIK and 4% as a result of PRK.
How do you prevent corneal ectasia?
Prevention of Corneal Ectasia in Refractive Surgery
- IDENTIFY AT-RISK CORNEAS. Additionally, proper patient selection may minimize the risk of corneal ectasia in patients undergoing refractive procedures. …
- IDENTIFYING PATTERNS. …
- IRREGULAR PACHYMETRY MAP.
How is post Lasik ectasia diagnosed?
Post-LASIK ectasia is considered in patients who developed increasing myopia, with or without increasing astigmatism, loss of uncorrected visual acuity, often loss of best-corrected visual acuity, with keratometric steepening, with or without central and paracentral corneal thinning, and topographic evidence of …
Can PRK cause ectasia?
PRK is often utilized for predominantly thin, high-risk corneas as opposed to LASIK. However, even though the likelihood of ectasia is lower after PRK than after LASIK, it should be noted that it is not always safe to do PRK on thin corneas. The onset of post-PRK ectasia is often late, which may lead to late diagnosis.
What does ectasia mean in medical terms?
Medical Definition of ectasia
: the expansion of a hollow or tubular organ.
Does LASIK cause keratoconus?
LASIK and keratoconus
In fact, there is a small risk that LASIK can induce a keratoconus-type condition called corneal ectasia if too much tissue is removed from the cornea of individuals who are susceptible to this condition.
What is Post LASIK corneal ectasia?
Post-LASIK ectasia is a condition similar to keratoconus where the cornea starts to bulge forwards at a variable time after LASIK, PRK, or SMILE corneal laser eye surgery.
Is corneal ectasia the same as keratoconus?
“Corneal ectasia” refers to a group of non-inflammatory disorders of the eye that involve the bilateral thinning of the cornea. Keratoconus is a specific type of corneal ectasia in which the cornea thins and weakens, leading to bulging and distortion.
Can PRK cause keratoconus?
PRK did not induce keratoconus progression in patients older than 40 with a grade I/II keratoconus. Residual CCT ≥ 450 μm seems to be sufficient to prevent the ectasia.
What is Fuchs dystrophy?
Fuchs’ dystrophy is an inherited condition affecting the cornea that can cause impaired vision and discomfort in the eye.
What is dystrophy of the eye?
Corneal dystrophies are a group of genetic, often progressive, eye disorders in which abnormal material often accumulates in the clear (transparent) outer layer of the eye (cornea). Corneal dystrophies may not cause symptoms (asymptomatic) in some individuals; in others they may cause significant vision impairment.