Histological Background of Susceptibility of Oculomotor Nerve to Ischemia
نویسندگان
چکیده
Although oculomotor nerve palsy, which is common in diabetes, is considered an ischemic mononeuropathy, the susceptibility of the oculomotor nerve to ischemic insult is not well understood. We analyzed the density of endoneurial microvessels of the oculomotor nerve and compared it with that of the sural nerve in non-diabetic patients. The mean vascular density of the oculomotor nerve (23 ± 8.4/mm2) was significantly smaller than that of the sural nerves (60 ± 29/mm2). The spatial distribution of the microvessels in the inner half (25.3 ± 6.7) was not different from that in the outer half (22.7 ± 9.4) in the oculomotor nerve. The lower density of microvessels in the oculomotor nerve might contribute to its susceptibility to ischemia.
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