Stereoscopic Acuity Flashcards
1
Q
what is stereoscopic acuity quantified by
A
by its threshold, not the inverse of the threshold
-in seconds of arc
2
Q
what is stereoscopic acuity
A
the smallest relative disparity resolvable by stereopsis
3
Q
how is threshold determined
A
psychophysical methods measure true threshold
- threshold bracketing is used in clinical tests
- analogous to snellen VA testing
- threshold is btwn where the pt definitely sees depth and wehre he can’t see depth at all
4
Q
stereoscopic acuity tests are what kind of devices
A
real depth devices or projected depth devices
5
Q
what are real depth devices
A
viewed targets are at different physical depths
