Post Lasik Ectasia is similar to Keratoconus where the cornea starts to bulge outward after LASIK eye surgery. Post-LASIK ectasia is caused by removing too much corneal tissue during LASIK surgery leaving the remaining corneal tissue too thin thus weakening the cornea and allowing it to bulge under normal eye pressure. The main symptoms of post-LASIK ectasia are blurry and distorted vision. Symptoms can occur anywhere from a month to 1.5 years after surgery
Some of the risk factors of Post Lasik Ectasia are:
Severe Myopia: People with severe myopia (near-sightedness) are at greater risk of developing ectasia following LASIK because more tissue will need to be removed from the centre of the cornea to correct refractive errors
Thin Corneas: People with thin corneas are at higher risk of developing ectasia following LASIK.
Unusual Corneal Shape: This is a possible risk factor even normal thickness of the cornea. It is therefore recommended that refractive surgeons carry out corneal topography to measure the curvature of the corneas prior to LASIK surgery.
Ectasia can be treated with a procedure called corneal collagen cross-linking (CXL). If you are at high risk of ectasia, then there are still options includingrefractive procedures that don’t involve a deep corneal flap — such as PRK, LASEK and epi-LASIK as these procedures remove less corneal tissue.