South Australian Institute of Ophthalmology, Adelaide, SA, Australia.
Radiology Department, Royal Adelaide Hospital, Adelaide, SA, Australia.
Eye (Lond). 2021 Sep;35(9):2613-2618. doi: 10.1038/s41433-020-01289-w. Epub 2020 Nov 22.
BACKGROUND/OBJECTIVES: This study aims to identify radiologically the position of the optic foramen in relation to the anterior face of the sphenoid sinus, to aid surgeons in their planning for orbital decompression.
CT scans of 100 orbits from 50 adult patients without any abnormality were assessed. Primary outcome measures included: position and measurement of the distance from the optic foramen to the anterior face of the sphenoid sinus. Secondary outcomes included: medial orbital wall length, distance from the optic foramen and the anterior face of the sphenoid sinus to the carotid prominence in the sphenoid sinus, and the thickness of bone anterior to the optic foramen.
The mean location of the optic foramen was just posterior to the position of the anterior face of sphenoid sinus, with an average distance of +0.4 +/- 3.5 mm. In 54% of orbits the optic foramen was positioned posterior to the anterior face of the sphenoid sinus. The finding was symmetrical in 80% of patients.
Our study identifies that the optic foramen lies posterior to the anterior face of sphenoid sinus in approximately half of cases. The position may be asymmetric in 20% of individuals.
背景/目的：本研究旨在通过影像学手段确定视神经孔在蝶窦前壁的位置，以帮助外科医生规划眶减压术。
对 50 例无任何异常的成年患者的 100 个眼眶进行 CT 扫描。主要评估指标包括：视神经孔的位置和距蝶窦前壁的距离。次要评估指标包括：眶内侧壁长度、视神经孔与蝶窦前壁至蝶窦颈动脉隆起的距离以及视神经孔前骨的厚度。
视神经孔的平均位置刚好在后床突的位置，平均距离为+0.4±3.5mm。在 54%的眼眶中，视神经孔位于蝶窦前壁的后方。80%的患者的发现是对称的。
我们的研究表明，在大约一半的情况下，视神经孔位于蝶窦前壁的后方。在 20%的个体中，该位置可能不对称。
