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The effect has nothing to do with cataracts or any other malfunction of the eye. It is simply a matter of optics.
Green eye or red eye is caused by the light from the flash reflecting back from blood vessels in the back of the eye. The color changes when the angle changes. It is not unusual to see one green and one red eye.
The effect is worst in dim light (when you naturally want to use flash) because the pupil is dilated (expanded) more in dim light and more light enters the eye. It is caused by having the camera's flash too close to the lens, and can be minimized by using the "red eye" setting for the flash, if available. Turning on more lights in a room can help, too, as can using a lighting source that is placed away from the camera.
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∙ 15y ago
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cataracts
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il a les yeux verts.
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