5) Pupil Measurement with Light Amplification Technology
To lessen the risk of glare after surgery, your pupil size should be measured in a dark room with either light amplification or infrared technology, neither of which makes your pupil artificially smaller. We consider this one of the most important tests a person should have prior to undergoing any refractive surgery.
How big your pupil gets in low light can be very important in how good your image quality at night is after refractive surgery. That's why HOW your pupil is measured is so very important.
In the old days we would use a penlight or other light source and compare the pupil with round circles on a card to estimate the pupil size in low light.
This test was not as accurate as we would like because even a little bit of light from any light source can make your pupil measure smaller than it truly is in low light. Modern day pupil size measuring technology involves either light amplification or infrared technology.
Both can accurately measure your pupil size in low light without making your pupil artificially smaller while performing the measurement.
After knowing what your pupil size is in low light conditions, the next question to ask is: "Will the laser treatment I have cover my pupil adequately in low light so as to maximize my night vision quality?"
If you cannot have a treatment that will cover your pupil in low light then serious consideration should be given to not undergoing refractive surgery.
Remember there is always the option of doing nothing and waiting for new technology that will cover your pupil in low light.
Read on to understand how scanning technology can treat large areas on the cornea to maximize the chance for a quality night image. We use scanning technology on most people with moderately sized pupils and all patients with large pupils in low light.
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