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Originally posted by unityemissions
Yep, moods/feelings will change our eye color. I've got hazel eyes, and they'll do just about every variation but pure blue.
I think this can be understood reasonably, and there's absolutely no reason to involve metaphysical beliefs in the mix.
Our body is an integrative whole. Our feelings/mood will change our brain chemistry, and this will change the level of activation of the rest of our physiological systems. This will change various measures of the circulatory system, which will likely be enough to change the color of the eye. At least, that's one possibility.
In humans, melanin is the primary determinant of skin color. It is also found in hair, the pigmented tissue underlying the iris of the eye, and the stria vascularis of the inner ear. In the brain, tissues with melanin include the medulla and zona reticularis of the adrenal gland, and pigment-bearing neurons within areas of the brainstem, such as the locus coeruleus and the substantia nigra. The melanin in the skin is produced by melanocytes, which are found in the basal layer of the epidermis. Although, in general, human beings possess a similar concentration of melanocytes in their skin, the melanocytes in some individuals and ethnic groups more frequently or less frequently express the melanin-producing genes, thereby conferring a greater or lesser concentration of skin melanin. Some individual animals and humans have very little or no melanin in their bodies, a condition known as albinism.
Originally posted by grizzle2
Originally posted by unityemissions
Yep, moods/feelings will change our eye color. I've got hazel eyes, and they'll do just about every variation but pure blue.
I think this can be understood reasonably, and there's absolutely no reason to involve metaphysical beliefs in the mix.
Our body is an integrative whole. Our feelings/mood will change our brain chemistry, and this will change the level of activation of the rest of our physiological systems. This will change various measures of the circulatory system, which will likely be enough to change the color of the eye. At least, that's one possibility.
Nope. Eye color is determined by a gene called POMC, if I remember correctly. The pigments never change. Especially not rapidly. There has to be something other than what science claims to understand.
Medical Disorders
When the eye color of an adult changes from blue to brown or brown to green dramatically, it is called heterochromia. This type of change could result from a disease such as Fuch's heterchromic iridocyclitie, Horner's syndrome or certain types of glaucoma. It is important to see a doctor if this type of change occurs to be correctly diagnosed and treated to prevent vision damage.
Medication
Some medications, including glaucoma treatments and medications for growing eyelashes, may cause the iris to change color. Usually these medications are in eye-drop form and cause the iris to permanently darken. The skin around the eye and eye lashes may also darken in color. Hazel eyes are most often affected by these medications.