How to drive when you're registered blind

[Portland]

Saw a thing on BBC news this morning, 600 people in California, and a similar number in Australia who are registered blind, but thanks to some cunning glasses, have got their licenses back:

http://www.biopticdriving.org/

Nothing against it in principal, I'm all for adapting cars to accomodate disability, but the simulation shown on the beeb this morning indicated the drivers view. Rather worryingly, there was a huge blur with a tiny spot of clarity in the middle.

How much loss of vision do you think you should have before they take your keys off you?

 

[hyb]

Good question, It should just be down to a simple mini driving test I think. The same with OAP's, reach a certain age and you should be retested, the amount of times i've nearly had an accident due to a bumbling old man/woman is in the thousands.

My previous car, 3 series bmw, I'd had it 3 days and was forced to mount a large pavement with sharp edges, curbing my alloys because an old woman in her volvo decided she wanted to drive down the middle of a road that day.