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?
This article on how the dyslexic brain develops is really interesting!
This website from Johnson & Johnson allows you to try out different coloured lenses to see what you would look like.
Glasses that can help to interpret facial expressions are being experimented with at the moment. If you have seen the TV show Lie To Me, then you will have an idea what I am talking about.
However, these have more down to earth aspirations … helping people with conditions such as autism, who often have problems interacting with others, to interpret the reactions of those around them.
Here is a link to an article about using hi-tech gadgetry to allow someone with impaired vision to function better in day-to-day life.