I’m putting these links here as they are all from the same website, but are on various topics.
Firstly, why can we see flashes of light when are eyes are closed.
Next up is why are primary colours primary?
Then (ugh) that stuff in the corner of your eye when you wake up. What’s that all about?
After-images are explained in this article.
Does reading make you short-sighted? Some more information on that subject here.
Why do we seem to see better with amber-coloured sunglasses?
Hunting birds of prey are able to see small animals from high up in the sky. Here’s how.
This article tells us why nocturnal hunting animals such as cats have slit shaped pupils during the daytime.
Cats also seem to communicate using blinking when they enter a new area. You can read more about that here.
The short answer seems to be no, but they do make the eyes work a lot harder than watching regular TV. This means that there can be more eye fatigue and even headaches for some people, which can indicate an underlying eye problem.
Just a few of the common questions that are asked in practice … myths and facts. Read about them here.