The etiology of essential blepharospasm is extraordinarily manifold and still not clarified in many instances. The therapeutic possibilities are equally manifold and not always satisfactory. A new method of surgical intervention consists in the dissection of the zygomaticotemporal nerve shortly after its separation from the stem of the facial nerve. In 10 cases with particularly severe blepharospasm, a permanent therapeutic result which was satisfactory in every respect was achieved in collaboration with an otorhinolaryngologist. For the ophthalmologist and otorhinolaryngologist a knowledge of the various therapeutic possibilities is important in order to adjust treatment accordingly.
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