The Outcome of Endoscopic Transethmosphenoid Optic Canal Decompression for Indirect Traumatic Optic Neuropathy with No-Light-Perception

Figure 1

The surgical procedures of ETOCD. (a) The medical wall of optic canal was thinned by a microdrill. (b) The thinned medial wall of optic canal was removed by a microcurette. (c) The periorbita of the orbital apex and annulus of Zinn was split with a sharp 9# MVR knife. (d) Five to six small intermittent punctuated incisions were made to the optic nerve sheath.

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