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Causes, Effects, and Symptoms of TBI
Many people experience eye twitching occasionally. It is usually not a cause for concern, but it can be an indication of a greater eye health problem. Eye twitching, medically known as myokymia, occurs when there is an involuntary contraction in the eyelid muscle. 
Visual acuity is how clearly you see at a specific distance. For example, when your eye doctor asks you to read letters off a chart during an eye exam, they are measuring your visual acuity. 
Your source for all things DNA You have several options when it comes to learning about your DNA, KnowYourDNA is the best source for finding all things related to DNA.
Effects of Drug Addiction on Oral Health
Specializing in treating children with disabilities, PACER Center provides this resource for parents trying to locate medical treatment and assistance.
Information about Hill-Burton free care, which is available to people below current HHS poverty levels.