Why Do My Eyes Glow Red in Photos?
You know how sometimes your eyes glow bright red in photos, making you look like a scary demon and ruining a priceless family memory? Well, there's a pretty ...
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Y’know that thing where your eyes glow bright red in photos? It’s called the red-eye effect. But it doesn’t mean you can secretly fire laser beams from your eyes or anything. Instead, you can blame the bright flash of a camera, and how your eye adapts to changes in light. Your eyes are basically fluid-filled orbs that can detect light and send messages to your brain, so you can see images. Light passes through a thin membrane called the cornea, then a hole called the pupil, and then a lens – so it can be focused, and absorbed by photoreceptor cells in the back of your eye. Your pupil is surrounded by this muscle-filled structure called the iris, which is the colored part of your eye. You don’t consciously move these muscles, but they control how big your pupil is, and how muc...
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Y’know that thing where your eyes glow bright red in photos? It’s called the red-eye effect. But it doesn’t mean you can secretly fire laser beams from your eyes or anything. Instead, you can blame the bright flash of a camera, and how your eye adapts to changes in light. Your eyes are basically fluid-filled orbs that can detect light and send messages to your brain, so you can see images. Light passes through a thin membrane called the cornea, then a hole called the pupil, and then a lens – so it can be focused, and absorbed by photoreceptor cells in the back of your eye. Your pupil is surrounded by this muscle-filled structure called the iris, which is the colored part of your eye. You don’t consciously move these muscles, but they control how big your pupil is, and how muc...
