The risk of central corneal scarring that can occur following the other refractive surgeries is generally eliminated in this case. Common complications include mild postoperative pain and occasional problems with night glare. Perforation of the anterior chamber has been reported, as well as infection and astigmatism, requiring removal of the rings. Phakic intraocular lenses that could be inserted without removing the natural lens are under investigation for correction of high myopia and hyperopia. Radial keratotomy, which involves making deep incisions in the cornea, is rarely performed today.
Results are less predictable in patients with astigmatism or high levels of myopia.
Synthetic intracorneal rings can be adjusted as the refraction changes. Because none of the surgeries corrects loss of accommodation, reading glasses will probably be needed as aging occurs. Corneal surgery for correction of refractive errors. A person viewing it online may make one printout of the material and may use that printout only for his or her personal, non-commercial reference.