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Re: Are HMD/eye displays harmful?

From: <>
Date: Thu, 4 Mar 1999 17:13:13 -0500

The vision in my Private Eye eye has actually improved over the course
of 6 years.  This may be age (I'm myopic and this improves slightly
with age) or due to the fact that the PE allows variable focus and is
extremely sharp - both of which relieve eye strain for long-term use.
I now notice the fuzziness of CRTs a lot more, but that may be the
emphasis on making cheap displays at the expense of quality.

BTW, I just saw the new color monitors that come with the Mac.  Very
nice. 

Two-eyed displays mean 2X the opportunities that one of the displays
will be out of calibration.  Also, as noted in a previous e-mail,
there are some fundamental problems with 2 eyed displays.  For
example, no affordable displays (<$10,000) give both good focus and
convergence cues. 

Game HMDs tend to be the worst offenders of all these effects.  For
example, the Virtual Boy, which is the same technology as the Private
Eye is basically unusable for me.

					Professor Thad Starner
					Future Computing Environments
					Georgia Tech

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