论文部分内容阅读
孔源性视网膜脱离(Rhegmatogenous retinal detachment,RRD)发生后,由于同时存在裂孔和视网膜脱离,眼内的流体动力学有所改变。这种改变可导致低眼压。早在1869年,von Graefe就描述了视网膜脱离和低眼压之间的关系。RRD发生后,40～50％的眼有低眼压,40％左右眼压正常,约9～10％的眼压偏高。高眼压多见于原有开角型或闭角型青光眼,在RRD发生后,因房水流出易度降低或应用散瞳剂而诱发。对于低眼压的原因,Leber(1916)提出,在视网膜脱离眼的后节,可能存在异常的房水通道。Dobbie(1963)检查了77例单眼RRD,视网膜脱离眼的平均眼压为12.4mmHg,对侧眼为15.9mmg。眼压降低的程度,与视网膜脱离的范围有关:范围越大,眼压越低。Dobbie通过静脉注射荧光素,然后测定荧光素在前房出现的时间、含量和消除率,
After rhegmatogenous retinal detachment (RRD) occurs, there is a change in the hydrodynamics of the eye due to the simultaneous presence of tears and retinal detachment. This change can lead to low intraocular pressure. As early as 1869, von Graefe described the relationship between retinal detachment and hypotony. After the occurrence of RRD, 40 ~ 50% of the eyes have low intraocular pressure, about 40% of normal intraocular pressure, about 9 ~ 10% of the high intraocular pressure. Ocular hypertension more common in the original open-angle or angle-closure glaucoma, RRD occurred after the drop due to aqueous outflow ease or the application of mydriatic agents induced. For low IOP reasons, Leber (1916) suggested that there may be abnormal aqueous humor channels in the posterior segment of the retina from the eye. Dobbie (1963) examined 77 patients with monocular RRD, the average intraocular pressure of retinal detachment was 12.4mmHg, the contralateral eye was 15.9mmg. The degree of IOP reduction is related to the extent of retinal detachment: the larger the range, the lower the IOP. Dobbie by intravenous injection of fluorescein, and then determine the time of fluorescein appeared in the anterior chamber, content and elimination rate,