论文部分内容阅读
房水以非常低的流速(2.0μl/min)经过房水通道。但是,这种低流量却能在一个很短的距离(<1mm)内产生很大的压力下降(pressuredrop)。正常眼压力下降约6mmHg左右。但是,青光眼压力下降可达40mmHg之多。为了更好地理解房水流出通道以及它与眼内压升高及青光眼的关系,作者研究了Sehlemm管在正常眼压力下降中的作用。许多研究着眼于证实房水通道中的流出阻力的主要部位。灌注试验表明随着眼压逐渐升高、房水流出阻力呈近于直线性变化。可能产生阻力的部位为:(1)角巩膜小梁网部;(2)邻管网部;(3)Schlemm管内壁的内皮细胞;(4)Schlemm管本身;(5)集合管和房水静脉。由于
Aqueous humor passes through the aqueous humor at a very low flow rate (2.0 μl / min). However, this low flow produces a large pressure drop over a short distance (<1 mm). Normal ocular pressure decreased about 6mmHg. However, glaucoma pressure drops as much as 40mmHg. To better understand the aqueous outflow tract and its relationship to elevated intraocular pressure and glaucoma, we investigated the role of the Sehlemm tube in the reduction of normal ocular pressure. Many studies look at the main part of evidence of outflow resistance in aqueous humor. Perfusion test showed that with the gradual increase in intraocular pressure, aqueous outflow resistance was almost linear changes. (1) Corneal scleral trabecular meshwork; (2) Adjacent tube network; (3) Endothelial cells of Schlemm’s internal wall; (4) Schlemm’s tube itself; (5) vein. due to