Macular degeneration is a condition that affects the retina, which is neural tissue that lines the back of the eye, like wallpaper in a room. There is an important area ...

Learn how a "black hole 30 billion times the mass of the sun in a galaxy 2 billion light years away" using gravitational ...

Optic Neuritis: Clinical Features Optic neuritis refers to inflammation of the optic nerve. The term may be used broadly in reference to many causes of optic nerve inflammation including systemic ...

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