Mooron is right. It's called long term phototropic hysteresis. It follows
the same principles as treating Raynaud's syndrome with conditioned cold
water immersion. The cross over point between the scotopic and photopic
intensity-subjective brightness curve and the associated Weber ratio are no
longer determined solely by the ambient irradiance, but rather by the time
varied filtered irradiance with both spectral and intensity changes not
natural to the eye. The ion channels that control the dynamic range of the
eye's sensitivity to intensity become clogged with unrecombined ions. Diet
can control this condition.

Do you see the light?!

Bob Crantz, Amen!



"Maxprop" wrote in message
ink.net...

"Capt. Mooron" wrote in message

Speaking from experience..... about 30 seconds. Caution though.... they
do
make for lazy pupils.

WHAT???? Where did you get this piece of *scientific* info?

Max