As people get older, they oftentimes lose the ability to see close objects. While their distance vision is probably superlative, they will most likely need glasses for reading or any other close-up activity. Until the advent of PresbyLASIK, the only option was bifocal or multifocal glasses. Traditional LASIK eye surgery could only change one aspect of their vision problems, it could allow them to see up close again, but only by sacrificing distance vision. PresbyLASIK has solved this problem by reshaping the cornea to be able to function normally at near, middle, and far distances.
Before the development of LASIK technology, PRK (photorefractive keratectomy) laser eye surgery was able to alleviate many of the problems associated with farsightedness, nearsightedness, and astigmatism. While most doctors now use LASIK for their eye surgery, PRK is still valuable when treating patients who have thin corneas, for whom LASIK will not work. The only top layer of the eye surface, the epithelium, is removed during this surgery. This leaves a thin cornea more intact than would be the case with LASIK.
To learn more aboutLASIK eye surgery and Kevin Niksarli.