My brother had the 3D problem fixed with glasses... not the regular kind but plain lenses tinted for him it was a combo of yellow and touch of blue so they looked like sunglasses.
You might like to try an experiment with those new 3D's by putting different coloured tinted overhead films on top of the images you'll probably find one tint that helps you to see the 3D image. It's a learned skill... my brother relied on the glasses to learn to read (self taught) at age 23, he now reads without glasses although he admits that its more difficult when he's tired. They helped teach him to find the focus for regular reading.
It's actually a trick that anyone can try if they are having difficulty seeing the 3d images. Our perception changes when we look at something through different tints it will work best on images printed in black... even the colour ones from the web can be printed out in black and you still can find the image.
Also don't try seeing them on the computer screen... print them out... there is a technical reason why most people will fail to see them on a computer screen. 
Cheers
Alex
[This message has been edited by AlexK (edited April 16, 2002).]
