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回顾有关视网膜、脉络膜血流的早期研究,初步报告光照对视网膜代谢和视网膜、脉络膜血流的作用。视网膜受自身血管和脉络膜血管的滋养,前者血流系自体调节,后者无自体调节。利用Sokoloff脱氧葡萄糖法察见,闪烁光照引起内层视网膜代谢增加,持续光照使外层视网膜代谢减低。闪烁光(8Hz)照时的视网膜血流量,高于持续光照。当抗体处于应急状态下血压急剧升高时,脉络膜内交感神经很可能参与防止血液过度灌注的保护性反应。脉络膜内来自面神经的扩张血管的副交感纤维,其生理作用尚不清楚。此外,神经肽NPY、VIP和PHI极有可能参与眼内血流自身调节反射活动。
Review of the early research on retinal and choroidal blood flow, preliminary report on the role of light on retinal metabolism and retinal and choroidal blood flow. The retina is nourished by its own blood vessels and choroidal blood vessels, the former blood flow self-regulation, the latter without self-regulation. Sokoloff deoxyglucose method was used to observe that flashing light caused an increase in the inner retina metabolism, sustained light to reduce the outer retina metabolism. Retinal blood flow at flashing light (8 Hz) was higher than sustained light. When the blood pressure is rapidly increased in an emergency, the choroidal sympathetic nerve is likely involved in a protective response that prevents over-infusion of blood. Parasympathetic fibers in the choroid that dilate blood vessels from the facial nerve are not clearly understood. In addition, neuropeptides NPY, VIP, and PHI are most likely involved in the intrinsic regulation of reflex activity in the bloodstream.