PRK candidates are generally patients whose corneas have an unusual curvature or are too thin for LASIK. PRK is also a better option for patients with moderately dry eyes. PRK corrects nearsightedness (myopic), farsightedness (hyperopic), and astigmatism. Additionally, a suitable PRK candidate will have a stable vision prescription for approximately one year and good overall eye health. PRK candidates must be at least 18 years of age (and preferably 21) so that the eyes – and vision – will have matured sufficiently. Although Clear Advantage has performed PRK on people over the age of 60, in most cases, significant changes, such as the formation of cataracts, have already started. In these cases, our surgeon will recommend a cataract evaluation to determine whether a lens replacement will provide better visual results.