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Cosmic Rays
High-energy particles, originating outside the solar system, that travel through space and strike the Earth's atmosphere.
Ultraviolet Rays
Invisible radiation with wavelengths shorter than visible light but longer than X-rays, capable of producing chemical reactions and causing harm to skin and eyes.
Visual Field
The entire area that can be seen when the eye is directed forward, including peripheral vision.
Retina
The light-sensitive layer of tissue at the back of the inner eye, which converts light images into neural signals sent to the brain.
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