Kishi S, Shimizu K
Department of Ophthalmology, Gunma University School of Medicine, Maebashi, Japan.
Ophthalmology. 1993 Feb;100(2):225-9. doi: 10.1016/s0161-6420(93)31666-0.
In diabetic retinopathy, fibrovascular tissue is prone to form around the macular area in a circular pattern. Posterior precortical vitreous pocket is a physiologically presented premacular liquefied lacuna of the vitreous. The authors studied how a posterior precortical vitreous pocket affects the clinical feature of proliferative diabetic retinopathy (PDR).
The authors examined the vitreous of 148 diabetic eyes from 114 patients with a ring- or C-shaped fibrovascular tissue surrounding the posterior fundus.
A cone-shaped partial posterior vitreous detachment was a common feature of the vitreous. A posterior vitreous detachment was prevalent outer to the ring-shaped proliferation. In the posterior fundus inner to the ring, only the gel component of the vitreous was detached from the fundus with the cortical vitreous still attached onto the retina. The premacular liquefied lacuna was identified as the posterior precortical vitreous pocket. The profile of this pocket became obvious when vitreous hemorrhage settled within the posterior precortical vitreous pocket. The ring-shaped proliferation was formed along its the outer margin.
These results suggest that a posterior precortical vitreous pocket plays a key role in determining the pattern of proliferation in some types of diabetic retinopathy.
在糖尿病视网膜病变中，纤维血管组织易于在黄斑区周围呈环形形成。皮质后玻璃体腔是玻璃体在黄斑前的生理性液化腔隙。作者研究了皮质后玻璃体腔如何影响增殖性糖尿病视网膜病变（PDR）的临床特征。
作者检查了114例患者的148只糖尿病眼的玻璃体，这些眼的眼底后极部有环形或C形纤维血管组织。
圆锥形部分玻璃体后脱离是玻璃体的常见特征。玻璃体后脱离在环形增殖灶外侧较为普遍。在环形增殖灶内侧的眼底后极部，仅玻璃体的凝胶成分与眼底分离，皮质玻璃体仍附着于视网膜。黄斑前液化腔隙被确定为皮质后玻璃体腔。当玻璃体出血沉积在皮质后玻璃体腔内时，该腔隙的轮廓变得明显。环形增殖沿其外侧边缘形成。
这些结果表明，皮质后玻璃体腔在某些类型糖尿病视网膜病变的增殖模式确定中起关键作用。
