I've often wondered the same thing. I have blue eyes, and I very frequently have the red eye effect in photos, but the people I'm with that have brown eyes, don't.
Every single person in my family - on both sides (cousins included) have blue eyes. I decided a long time ago I could only marry a guy with blue eyes to continue the tradition
We all have blue or green eyes in our family (and our parents and siblings too) and the green eyes get the red eye too. Maybe it is a recessive gene issue!
Every single person in my family - on both sides (cousins included) have blue eyes. I decided a long time ago I could only marry a guy with blue eyes to continue the tradition
LOL, dont' choose just for that. My grandparents both had blue eyes and my dad has hazel. Mutation of genes will cause some hazels and greens
I have light green eyes myself and honestly haven't noticed red eye really happening to me more than my dk brown eyed sister. The only thing is her red eye is harder to see (but you can see the discoloration in the pupil, and not the brown) while mine is very noticable and quicly noticable.
We all have blue, but only me and my youngest get red eye. I heard somewhere that it's due to flat corneas (which I know I have). I don't know if this is true or not.
[edit] Causes of red-eye
The light of the flash occurs too fast for the iris of the eye to close the pupil. Light is focused onto the blood-rich retina at the back of the eye and the image of the illuminated retina is transmitted to the camera resulting in the red appearance of the eye on the photo. (This principle is used in the ophthalmoscope, a device designed to examine the retina.)
The effect is generally more pronounced in people with grey or blue eyes and in children. This is because pale irises have less melanin in them and so allow more light to pass through to the retina. Children, despite superficial appearances, do not have larger pupils but their pupils are more reactive to light and are able to open to the fullest extent in low light conditions.
In many species the tapetum lucidum, a light-reflecting layer behind the retina which improves night vision, intensifies this effect. This leads to variations in the colour of the reflected light from species to species. Cats, for example, display blue, yellow, pink, or green eyes in flash photographs.