How should pupil size be measured?
Note: The following information does not replace personal medical advice from your doctor. Please read our disclaimer. Proper pre-operative screening should involve a number of tests including the evaluation of pupil size. TLC centers use a device called the Colvard Pupilometer. This infrared instrument enables TLC to precisely measure the size of the pupil in the darkest environment, when the pupil reaches its largest diameter. Generally speaking, a pupil size of less than 7 mm falls within the criteria for LASIK candidacy, although there are some lasers and patient prescriptions which may be effectively treated even if the pupil is measured at greater than 7 mm. It is important to note that large pupils do not perfectly correlate with post-operative glare. Post-operative night glare is normal and temporary with most patients. Pupil measurements along with other aspects of a complete pre-operative consultation and testing with your TLC doctor all help to accurately determine if LASIK
