Add on for visually impaired people

[fingolfin]

Good afternoon everybody,

first I'd like to apologize for my very bad english, I hope I will be able to explain my problem.

I have a friend who is playing TESO and who is visually impaired. Just an exemple : it's very difficult for him to see when it's a simple NPC, an enemy, or a friend... The yellow frame above enemies is not big enough for his eyes.
There are probably a lot of other situations for him which are difficult. I must ask him for more details.

So I'd like to know, does an addon exist which could make it easier for him to play ? If it does not exist yet, do you think it's possible to make it ? I've no idea how much modding is difficult, and what can be done or not.

If somebody here accepts to try to do it, I will ask to my friends all détails about situations in which he get troubles.
That would be very nice if we can do something, and it could be very usefull to help people having vision handicap playing this beautiful game .

Thanks to people who take time to read this !