Eyelid Disorders: Causes, Symptoms and Treatments
Eyelids protect our eyes from threats and keep them hydrated to avoid irritation. They are important in keeping the cornea healthy and necessary for overall eye health. Eyelid disorders range from mildly irritating, such as inflammation, to serious d...
Read MoreSunglasses in Space
Special protection is required for space travel because the sunlight is far more intense and harmful than on Earth, where it is always filtered through the atmosphere. With the earth's outer shield, our planet is protected from 98.7% of the sun's UV ...
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