This is an interesting question and one that we’re possibly just on the leading edge of being able to ask correctly. The answers are likely to be varied and al

This is an interesting question and one that we’re possibly just on the leading edge of being able to ask correctly. The answers are likely to be varied and along multiple axis: - Do they affect the muscles of the eye, especially the ones that affect the lens - Do they affect the rods/cones (and do they equally affect people with genetic differences) - Do they affect the way the signals are sent to the brain - Do they affect the visual cortex itself and - Do they affect the brain’s processing of visual input in some way In my personal experience, I’d say we’d need to look at someone for a minimum of 3 years, and ideally 5 or more.