How Is Botulinum Toxin A (Botox) Used to Treat Blepharopspasm?
Blepharopspasm is when eyelid muscles around the eye close involuntarily. This may cause loss of vision, especially while reading, headaches, and eyebrow strain. Symptoms include increased blink rate, eyelid spasms, eye irritation, midfacial or lower facial spasm, brow spasm, and eyelid tic.

Long-term follow-up studies have shown botulinum toxin A to be a very safe and effective treatment, with up to 90% of patients obtaining almost complete relief of their blepharopspasm. The sites of the injection will vary slightly from patient to patient. The injection is usually given with a very fine needle on the eyelid, the brow, and the muscles under the lower lid.