P3D Re: anaglyph glasses and permanent colour shift

[abram klooswyk <abram.klooswyk@xxxxxx>]

John Toeppen wrote (P3D 3717, 12 Feb 2000, on crosseye jps 
advantage):
>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.

Then Robert Cruickshank started the thread on anaglyph glasses 
and permanent colour shift (P3d 3717, 13 Feb 2000).

The man John Toeppen knows may have his believes, but I don't
believe he is right.
As several people have written, temporary marked changes in
color perception can arise from several ways of exposure to
colors, but no permanent change. 

If this were the case, the remedy for the man known by John is 
obvious: wear anaglyph glasses the other way round then before.
So wear red right if it was red left before. This should change
perception permanently back again. But I don't believe such
changes exist.

(Of course, people tend to shift their political preferences
with 
age. A red lefty may end up in the right wing. So switching 
anaglyph glasses is a way to see the right colors and be right 
all the times :-).)

Abram Klooswyk