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Related to functional blindness: ablepsia
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is approved for the treatment of four debilitating conditions, including two eye disorders that can lead to functional blindness, cervical dystonia which is a painful movement disorder affecting the head and neck, and excessive underarm sweating.
The result is blurred vision, which is sometimes so severe that it creates functional blindness for affected individuals.
Usually age-related, this clouding obstructs the passage of light and can lead to functional blindness.

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