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This phenomenon is widely reported, even in young folks with no evidence of lens defects. The exact cause is unknown. Some animal studies suggest that it is due to light exposure being different between the eyes shortly after birth, leading to a slight difference between the sensitivity of the retina in one eye compared to the other. Usually, the difference in color perception between the eyes is relatively minor. Other studies suggest that the effect in the visual cortex of the brain. By the way, unless you don't have an optic chiasm, nerve impulses from each eye travel to both sides of the brain.