Re: weighting depth cues - stereoblindness

[T3D Richard Young <young@xxxxxxx>]

Gerald Westheimer (posted by T3D Richard Young in TECH-3D Digest 183):
>>...incidentally, about 98% of college biology students have acceptable
>>stereopsis and 3-D is an exceedingly good tool for demonstrating molecular
>>structure.  More people have full stereoptic capability than full color
>>vision!

T3D Jim Crowell's reply (in TECH-3D Digest 183):
>That's interesting.  I wonder if that means there's actually a difference
>between college students & others or if it's a criterion effect?  i.e.
>there are probably degrees of stereoblindness, maybe the 7% figure was
>arrived at by placing the dividing line at a different point...

Gerald Westheimer's reply to Jim:
"Coutant BE., Westheimer G. (1993) Population distribution of stereoscopic
ability.   Ophthalmic and Physiological Optics 13: 3-7. Undergraduate
biology students in Berkeley.  Results of stereoacuity measurements depend
on the kind of test, but "of the 188 total subjects ..only 5 (2.7%) were
unable to detect depth differences < 2.3 min arc."

- posted by T3D Dick Young



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End of TECH-3D Digest 190
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