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Fig. 1 | Eye and Vision

Fig. 1

From: Modified endoscopic transnasal orbital apex decompression in dysthyroid optic neuropathy

Fig. 1

Endoscopic transnasal orbital apex decompression was performed in a DON patient. a Before removal of the inferior wall of the left orbital apex (white asterisk). b After removal of the bone at the junction of orbital apex and pterygopalatine fossa (black asterisk). c After decompression of the anterior segment of the optic canal. The orbital periosteum of the orbital apex is incised (black arrow). d Preservation of the inferomedial strut (white asterisk) and creation of periosteal band (black asterisk). IR = inferior rectus, ON = optic nerve

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Eye and Vision

ISSN: 2326-0254