October 13, 2006, Newsletter Issue #35: Changing Eye Prescription
Tip of the Week
In most guidelines for refractive surgery, you'll find that an eye surgeon requires you to have had a stable prescription for at least a year. You also know that surgeons are usually concerned that fluctuations in eye prescriptions will cause regression.
You think that a changing prescription won't be a problem--you're 50 and older, you're stable and mature.
All bets are off with presbyopia and hyperopia, which get worse as you age because your eyes age, so you could have diopters of +2.00 one year. Two years later, a diagnostic eye exam could reveal that your prescription is +4.00 diopters. CK requires you to have a stable eye prescription.
Yet some CK eye surgeons say that you can have conductive keratoplasty if your prescription is likely to change. Your presbyopia will probably level out to a low-range aberration, +2.00 to +2.25 diopters.
Prescription change, however, is only acceptable after you have the procedure, when your CK eye surgeon can perform enhancements. Your prescription needs to be stable for at least a year before any conductive keratoplasty procedure.
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