Hitchings R A, Spaeth G L
Br J Ophthalmol. 1976 Oct;60(10):694-9. doi: 10.1136/bjo.60.10.694.
Asymptomatic chronic retinal vein occlusion that occurs in chronic simple glaucoma is described. The condition is characterized by marked elevation of retinal vein pressure with collateral vessels and vein loops at the optic disc in cases of central vein occlusion, or retinal veno-venous anastomoses along a horizontal line temporal and nasal to the disc in hemisphere vein occlusion. No patient had visible arterial changes, capillary closure, fluorescein leakage, or haemorrhages. The vein occlusion was not limited to "end stage" glaucoma. The role of increased intraocular pressure and glaucomatous enlargement of the optic cup with retinal vein distortion in the pathogenesis of the condition was stressed. Follow-up of these patients revealed persistence of the retinal vein occlusion shown by elevated retinal vein pressures. This would reduce effective perfusion of the inner retina and optic disc and may affect the long-term visual prognosis.
本文描述了慢性单纯性青光眼患者出现的无症状性慢性视网膜静脉阻塞。这种情况的特征是，在中央静脉阻塞时，视网膜静脉压力显著升高，视盘处出现侧支血管和静脉环；在半侧静脉阻塞时，沿视盘颞侧和鼻侧的水平线出现视网膜静脉-静脉吻合。所有患者均未出现明显的动脉改变、毛细血管闭塞、荧光素渗漏或出血。静脉阻塞并不局限于“晚期”青光眼。文中强调了眼压升高以及青光眼性视杯扩大伴视网膜静脉扭曲在该病发病机制中的作用。对这些患者的随访显示，视网膜静脉压力升高表明视网膜静脉阻塞持续存在。这会减少视网膜内层和视盘的有效灌注，并可能影响长期视觉预后。
