3 ms·

So as a getting-older-over-halfway-done guy, my night vision is already pretty crap. Are you saying it will get even worse?

• thfuran 1y ago
  They reshape an area smaller than a fully dilated pupil, so night vision is affected because you're seeing light that passed through the corrected area and light that passed through the uncorrected area (and the boundary itself might mess things up in a more complicated way). Whether that sort of distortion is "worse" than entirely uncorrected vision is kind of subjective. Also, I think that effect diminishes with age because the pupil stops dilating as fully.