What Is Presbyopia
Everyone will experience difficulty reading, usually beginning in their 40s. Your eye has a lens, which “accommodates” light so that you can see at near distances. With presbyopia, light from a near object enters the eye, the cornea refracts the light and the lens changes shape to accommodate for the decreased focal length of a near object.
This is exactly the same process that occurs when focusing your camera on a near object. Unfortunately, the lens within the eye, as it ages, loses its ability to focus for us and we need reading glasses or bifocals. The most popular solution in the past for presbyopia has been bifocals or reading glasses. We now have have surgical options such as Clear lens extractions with multi-focal lens implantation and monovision laser vision correction.
Understanding Astigmatic Keratotomy
Astigmatic Keratotomy (AK) is a procedure that is effective in the treatment of astigmatism. The surgeon makes tiny incisions in the cornea to change its curvature. The incisions relax the curves in one direction to make the eye more round. AK can be used as an enhancement following LASIK or PRK, cataract, or lens implant surgery. Residual or above average astigmatism, though, can still be corrected with the excimer laser.