What Wavefront optical distortions are present in an eye?
In general terms, there are two types of optical distortions: low-order and high-order. Low-order distortions include nearsightedness (myopia), farsightedness (hyperopia), and astigmatism. There are a number of types of high-order distortions. These may be responsible for some of the vision and night vision concerns that some patients have had after laser surgery. These include ghosting (double vision), starbursts, and halos. The measurement and treatment of optical distortion is done with the CustomVue™ System.
