I can't see how someone can have better colour vision and how scientists can tell this shit information
What I see as Red might look completely different to you
( Mrs Sp@m, Mon 29 Jun 2009, 17:56, archived)

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)

It's about discrimination between shades.
You basically get a load of colours and have to arrange them into a spectrum.
People with poor colour vision get them in the wrong order in certain regions.
( my other username is a porsche , posting shit pictures so you don't have to, Mon 29 Jun 2009, 17:58, archived)

What Porsche said.
The fact that you can see what you think of as green and what you think of as blue as distinct shades alone means that you're distinguishing between them, which many people can't.
My eldest brother has red/green colour blindness, which meant he couldn't join the RAF as he planned.
( Malchick, Mon 29 Jun 2009, 18:00, archived)

There used to be a rule in football in that
if it started to snow while the game was being played, they would change the white ball for a orange one, as the orange ball showed up nicely against the white snow.
However, if the snow melted during play, they were not allowed to change the orange ball back for a white one, and this caused problems for players with colour blindness as the orange and green are two of the colours that cause problems for colour blind people.
I suspect the rule has changed now.
( turb0t, Mon 29 Jun 2009, 18:05, archived)