I'm no expert, and I didn't start losing my vision until I was 20, but I
do have visual memories from before the age of 3, so suspect the problem
with one of the subject's not seeing might have had more to do with the
optic nerve than the visual cortex.

Tom Karnes


On Tue, 11 Jun 2002, Rachel wrote:

> I could see until the age of four or so, but I have absolutely no memories
> of it whatsoever.  And from what I understand, there was one volunteer who
> was implanted with this artificial vision device, who'd lost his sight at
> age five; and he never saw a thing.  They speculate that this is possibly
> due to this man's visual cortex not having fully developed.  So, at least
> with this device, this means to me that even if you could see till at least
> age five, you probably wouldn't benefit from the device.  So it isn't just
> the need to learn to interpret what you see that's the problem here.
> Rachel
>
>
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VICUG-L is the Visually Impaired Computer User Group List.
To join or leave the list, send a message to
[log in to unmask]  In the body of the message, simply type
"subscribe vicug-l" or "unsubscribe vicug-l" without the quotations.
 VICUG-L is archived on the World Wide Web at
http://maelstrom.stjohns.edu/archives/vicug-l.html