How to make blur vision?

[whj]

Hello,

I'm trying to get the effects of visual impairments or low vision when users seeing scene from HMD. I'm looking for a way in the render system of vizard to blur objects far from users. I tried previous post solution: http://forum.worldviz.com/showthread...highlight=blur, but have following problems:

1. I prefer a non-uniform blur which makes further objects more blur.

2. I need this effect to work in stereo.

3. When I ran this script, I got the error said "before Font::Glyph::subload(): detected OpenGL error 'out of memory".

The system spec:
Microsoft Windows XP, 32-bit (Service Pack 3),
DirectX version: 9.0c,
Vizard 3.13.0002

NVIDIA GeForce 8800 GTX -
Driver version: 185.85
Stream processors: 128
Core clock: 576 MHz
Shader clock: 1350 MHz
Memory clock: 900 MHz
Memory interface: 384-bit
Memory: 768 MB

Thanks a lot!