If eye twitching becomes chronic, it could be a sign of benign essential blepharospasm. This condition's characteristic symptoms are uncontrollable winking and blinking. It usually affects both eyes, and the cause is unknown. Certain factors may make the spasms worse, which results in twitching rather than blinking. As the condition worsens, a person may develop blurry vision, increased light sensitivity, and facial spasms.

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