[thelist] Re: [Photoshop] Simulating Bad Vision

[Kevin Martin]

Quoth "Joshua Olson" <joshua at waetech.com>
> Bad vision is like the bright areas are exploding (bluring as it were) and
> the dark areas are then overtaken by the bright areas.  This text, such as
> times roman, kindly disappears from the background.  Highlights on pictures
> become more pronounced than dark areas and all the detail fades away.

JASC's Paint Shop Pro has a "dilate" filter that does exactly what 
you're asking.  Free time-limited sample version at their website, 
www.corel.com  (darn, they got bought out!)