Gadzhev S, Gudev Kh
Vet Med Nauki. 1982;19(9):27-33.
Studied were the structure and the blood supply of plexus ophthalmicus and plexus orbitalis medialis in twenty newborn lambs and in ewes and rams aged up to eight years, employing the methods of preparation and corosion. It was found that sheep had well developed intraorbital venous plexuses. Plexus ophthalmicus was found to be formed by branches of the supraorbital and the external dorsal eye vein as well as by veins coming from the eye orbit and the accessory organs of the eye. It was said to have a cone-shaped form, 3 to 4 cm long, and with a dia at the base of about 2 cm. The veins that formed the plexus were found to be located radially and in a circular way, having a varying length and forming loops of different shape. Rete mirabile venosum ophthalmicum initiated from the dorsal wall of the plexus, embracing the arterial network--rete mirabile ophthalmicum. There was in the medial eye angle a well developed plexus orbitalis medialis connected with plexus ophthalmicus. The latter was found to be connected with plexus venosus cavernosus, the winglike plexus, and the maxillary vein. In newborn lambs plexus ophthalmicus and plexus orbitalis medialis were completely developed. It is believed that the venous plexuses have a collecting, distributing, and hemodynamic function with regard to the blood in the eye region, and particularly with regard to both rete mirabile ophthalmicum and rete mirabile epidurale rostrale.
采用解剖和腐蚀方法，研究了20只新生羔羊以及年龄达8岁的母羊和公羊的眼丛和眶内侧丛的结构与血液供应情况。发现绵羊的眶内静脉丛发育良好。眼丛由眶上静脉和眼背外侧静脉的分支以及来自眼眶和眼附属器官的静脉形成。据说其呈锥形，长3至4厘米，基部直径约2厘米。形成该丛的静脉呈放射状和环状分布，长度各异，形成不同形状的环。眼静脉奇网从丛的后壁起始，包绕动脉网——眼动脉奇网。在内眼角有一个发育良好的眶内侧丛，与眼丛相连。后者与海绵窦丛、翼状丛和上颌静脉相连。在新生羔羊中，眼丛和眶内侧丛已完全发育。据信，静脉丛对于眼部区域的血液，特别是对于眼动脉奇网和鼻端硬膜外动脉奇网，具有收集、分布和血液动力学功能。
