Abstract:We have read with interest the letter of Kanazawa 1 about improvement of apraxia of eyelid opening (AEO) with botulinum toxin A.The term AEO defined as an intermittent inability to open the eyes voluntarily is not a specific entity; it is only a clinical sign whose physiopathological origin is variable. It may be caused by an involuntary inhibition of levator palpebrae superioris (IILPS) or a blepharospasm restricted to the pretarsal portion of the orbicularis oculi (OO) called pretarsal blepharospasm (BSP). 2… Show more
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