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An interesting question about changes in adult eye color is often asked. As we have discussed previously, eye color is about reflection of ambient light from the structure of the iris. People with lightly colored irises note that their eye color changes according to the colors they wear. No mystery there, but the resultant apparent color of the eye is a combination of the color reflected from one's clothing (or even eye make up) and is not always what you might expect!
Originally posted by mrsdudara
My eyes are the same. I have a theory, and would be interested to see if it fits you as well. It is said that women in some cultures were actually nocturnal. That is why some of us have a 28 day menstral cycles. I figure that is also why I have these eyes you describe and show in your pic, that are also super sensitive.
Originally posted by ravenshadow13
It may explain better night vision, but probably not lighter pigments. Isn't eye color determined by dominant and recessive traits?
Eyeshine is a visible effect of the tapetum lucidum. When a light is shone into the eye of an animal having a tapetum lucidum, the pupil appears to glow. Eyeshine can be seen in many animals, in nature and in flash photographs. In low light, a hand-held flashlight is sufficient to produce eyeshine that is highly visible to humans (despite our inferior night vision); this technique, spotlighting, is used by naturalists and hunters to search for animals at night. Eyeshine occurs in a wide variety of colors including white, blue, green, yellow, pink and red. However, because eyeshine is a form of iridescence, the color varies slightly with the angle at which it is seen and the color of the source light.
White eyeshine occurs in many fish, especially walleye; blue eyeshine occurs in many mammals such as horses; yellow eyeshine occurs in mammals such as cats, dogs, and raccoons; and red eyeshine occurs in rodents, opossums and birds.
The human eye has no tapetum lucidum, hence no eyeshine. However, in humans and animals two effects can occur that may resemble eyeshine: leukocoria (white shine, indicative of abnormalities including cataracts, cancers, and other problems) and red-eye effect (red shine, apparent only in flash photography).