I have been wondering for a while what it is and don't chameleons see all seven colours of light? And it's clear their vision is an unknown percentage better than ours and the ability to put a picture together by looking in two complete opposite directions is a head screw just thinking about it but could they see something that we don't??? If you look in a camera lense and phones there is some strange colours.
Also lenses are similar shapes to eyes and my 2 hate eye contact, just a couple if theories