Ishihara plate test.

( BraynDedd Natasha Kaplinsky's labia majora, Mon 29 Jun 2009, 17:57, archived)

I'm told that the Ishihara test is shit and hugely oversensitive

( my other username is a porsche , posting shit pictures so you don't have to, Mon 29 Jun 2009, 17:58, archived)

Probably.
I didn't get very far in my training before I packed it in.
( BraynDedd Natasha Kaplinsky's labia majora, Mon 29 Jun 2009, 18:00, archived)

my optician was low quality
they just used the saucers from teacups
( turb0t, Mon 29 Jun 2009, 17:59, archived)