The key to diagnosis is in the history-taking when a patient comes in for a pre-LASIK evaluation. If a patient is seen the first time, an optometrist is able to gather some information on the patient's prescription stability. For example, patient's age, performance of current glasses, previous vision correction aids etc.
Certainly, a manifest refraction (degree check) would be performed and thereafter cross-checked with all the above information obtained. Should the optometrist has reservation on the stability of patient's prescription, it would be beneficial to then have another manifest refraction in few months’ time to ascertain stability before having LASIK.
