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For those of us who depend so heavily on our sense of sight, the idea of losing it is scary. Even scarier? The prospect of losing it without warning due to a silent thief called glaucoma.
This detailed medical animation explains the movement of blood between the heart and the body's organs and tissues.
SYMPTOM CHECKER
DISEASES A-Z
Learn more about what ails you. Here are some common symptoms.
See all »Common Symptoms: