On Fri, 1 Jul 2005, Peter wrote:
> On Thu, 30 Jun 2005, Don Taylor wrote:
>> Avoid the brightness drawback, turn the pointers around, paint directly on 
>> the retina.
>> 
>> You did ask for twisted.
>
> You could sell these as a kit. Alas the box would have to be large enough to 
> hold the supplied white cane and opaque blind man's 'sunglasses' needed for 
> completion.

That screen burn, it is really annoyning :)

Similar subject that you might be able to use your little laser pointers 
for.  Many years ago in the Scientific American Amateur Scientist column
there was a little project.  Roughly what it did was switch back and
forth between two light sources separated horizontally by a small space.
This "jiggles" the light on the back of the eye and fools the brain's
usual mechanism that hides the structure of the retina from you.

What it lets you see is some indication of the structure of the retina,
see the blood vessles that are laying over parts of this, etc.

The original project was in a different era and bringing it up to
current technology might make this considerably easier to build.

Took lots of groping to find the original article, Jan 1958.
But there are also related visual projects, Apr 1982, Mar 1978,
Apr, May 1980 that you might be able to turn your lasers against.
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