Most people who have radial keratotomy (RK) surgery gradually become more farsighted for at least 8 to 10 years after surgery. This is called the hyperopic shift. It is not clear what causes the shift. It's also not clear how long it may last or how bad it will get.
The effects depend on the person's age and whether the person is nearsighted or farsighted after the surgery.
It's important for adults 40 and older to have eye exams every 1 to 2 years to check for problems. Regular eye exams are critical for finding:
Age-related macular degeneration (AMD)
This is particularly important if you have risk factors or a family history of eye problems.
For adults younger than 40 without any problems, the recommendations vary from routine tests every 2 years to no tests. If you have a health...