The answer is the cataract. A cataract is a shadowing of the lens in the eye which leads to a decline of vision. Cataracts often progress slowly and can affect one or both eyes. Symptoms may include faded colors, blurry vision, and halos around light, trouble with bright lights, and trouble seeing at night.
I'm not sure if you have choices or not but many abusers use substances to numb feelings in order to avoid negative feelings.
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