P3D Anaglyph Colors

[Ray Zone <r3dzone@xxxxxxxxxxxxx>]

John Toeppen wrote:

>One man I know has a permanent tint in his vision that he
>believes came from extensive use of anaglyph eye wear for comics
>in his youth.

Ray Zone responds:

What, may I ask, is a "permanent tint" in vision?  If anaglyph viewing
were (permanently) harmful to vision then optometrists would not
continue to use it.  "The use of colored filters as a dissociation
mechanism is popular for both testing and therapy of binocular anomalies.
Most procedures have the advantage of being performed in true space,
similar to vectographic techniques." (Binocular Anomalies: Procedures for
Vision Therapy, John R. Griffin, O.D., Professional Press, Chicago: 1982).

In "Binocular Anomalies" the author John Griffin also states:  "A popular
commercially available anaglyphic device is the Keystone Basic Binocular
Test Set (manufactured by Keystone View Division of Mast/Keystone).  There
are 12 charts that allow for first, second, or third degree fusion testing."

The "'World's First' Three-Dimension Comics" (St. John: 1953)  contained
the following quotation from an unnamed but "noted New York eye specialist"
(name  available upon request) who stated "Three-dimensional comics and
pictures can do no harm to the vision of children.  They may actually
benefit some children.  In fact, oculists have been using stereoscopes for
many years for training the eye muscles of children.  Three-dimensional
comics may have the same helpful effects."

Other anaglyphs used by optometrists are manufactured by Allbee and Son
Company and printed on a black background using the "Root Rings" in which
the red filtered eye sees only the red figures and the green filtered eye
sees green (opposite to a white background).  The "T.N.O. Stereo Test"
manufactured by the Richmond Company is an anaglyphic pediatric test for
stereoscopic vision that is used on children as young as 2 1/2 years of age.

Perhaps the unnamed gentleman with the "permanent tint" may suffer from a
color blindness anomaly.  Keystone also manufactured stereo cards that
tested various degrees of color blindness and its relation to binocular
vision.

* * * * * * * *
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