Excessive blinking, or forceful closure of both eyes is a neurological condition. In medical terms, it is called Blepharospasm. The patient loses control over the blinking and finds it difficult to keep the eyes open. The exact cause is not known, but a complete eye checkup is required to find its cause. Treatment is required to make the person function normally. Treatment options include Botulinum toxin, or even eyelid surgery (Orbicularis myectomy). This video shows the effect of Botulinum toxin for a patient with Blepharospasm.