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**Misiotoagodia** · 11-19-2006, 10:49 PM

While I don't know the answer to this, you'd have to eliminate the following:- The eyes have a reflective surface behind the retina (light sensitive back surface) of the eye which bounces light from, for example, your headlights back at you somewhat like highway reflectors. The purpose of the surface is to increase the ability of the retina to detect faint light -- that is, the ability of the animal to see in the dark -- by
making the light pass *twice* through the retina. Humans don't have this
surface, but very bright light will bounce back from the retina itself
enough to be seen. Since the retina is red (from its ample blood supply)
you see a red reflection, and this is the source of the "red spot" in the
eyes in photographs of people who looked at the flash.

This may help somewhat in distinguishing between what is natural and what may appear to have a more 'super' natural origin.

11-19-2006, 10:49 PM	#4
Misiotoagodia Join Date Oct 2005 Posts 610 Senior Member	While I don't know the answer to this, you'd have to eliminate the following:- The eyes have a reflective surface behind the retina (light sensitive back surface) of the eye which bounces light from, for example, your headlights back at you somewhat like highway reflectors. The purpose of the surface is to increase the ability of the retina to detect faint light -- that is, the ability of the animal to see in the dark -- by making the light pass twice through the retina. Humans don't have this surface, but very bright light will bounce back from the retina itself enough to be seen. Since the retina is red (from its ample blood supply) you see a red reflection, and this is the source of the "red spot" in the eyes in photographs of people who looked at the flash. This may help somewhat in distinguishing between what is natural and what may appear to have a more 'super' natural origin.
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