PHYSIOLOGY OF THE CHOROIDAL VASCULAR BED
PHYSIOLOGY OF THE CHOROIDAL VASCULAR BED
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DOI：
10.1007/bf00127638
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发表时间：
1983-01-01
影响因子：
1.6
通讯作者：
UJIIE, K
中科院分区：
文献类型：
--
作者：
BILL, A;SPERBER, G;UJIIE, K
脉络膜血管床有许多有趣的特征，例如相对较宽但平坦的毛细血管、有孔的毛细血管壁和巨大的血流量。高流速会导致组织中的高氧张力，这对于眼睛的温度控制也很重要。毛细血管壁可渗透血浆蛋白，这对于向色素上皮供应维生素 A 可能非常重要。对低分子量物质的渗透性非常高，这导致组织液在小分子方面类似于血浆。目前尚不清楚脉络膜毛细血管是否正常地重新吸收从视网膜和前房输送到脉络膜的液体，或者是否存在来自脉络膜毛细血管的净过滤。液体可以从脉络膜穿过脉络膜上层，经由巩膜物质以及血管和神经周围的空间进入巩膜外层组织。
The choroidal vascular bed has many interesting features such as relatively wide but flat capillaries, fenestrated capillary walls and an enormous blood flow. The high flow rate results in a high oxygen tension in the tissue and is also of importance in the temperature control of the eye. The capillary wall is permeable to plasma proteins which is probably of great importance for the supply of vitamin A to the pigment epithelium. The permeability to low molecular weight substances is very high which results in a tissue fluid similar to plasma with respect to small molecules. It is not clear whether the choriocapillaris is normally reabsorbing fluid transported into the choroid from the retina and from the anterior chamber or if there is a net filtration from the choriocapillaris. Fluid can pass from the choroid through the suprachoroid into the episcleral tissues via the scleral substance and spaces around the blood vessels and nerves.