what kind of rays are in eye scanning equipment, and are the rays or the scan (for ID's) dangerous?

Question

for people who have had lasik or cataract surgery or for those people who wear contacts?

Answer 1

They are not x-rays. X-rays only can detect hard objects like bones so that has nothing to do with eyes

They are typically an IR beam (red light) that is scanned back and forth to form an image of your retina. It is quick and low intensity.

Lasik, cataracts, and contacts have nothing do do with the scanning and do not impact it.