| Retinal Vascular Patterns: Part I. A/V crossings, argyrophilic perivascular network, exogenous retinal vasculitis and arterial annulus. |
|
Song Hee Lee |
|
Department of Ophthalmology, College of Medicine, Busan National University, Busan, Korea. |
| 망막 혈관상 - 제1보 : 동정맥 교차현상 , 혈관벽의 호은성 섬유망 , 외인성 화농성 망막혈관염 및 세동맥륜에 대하여 - |
|
이송희 ( Song Hee Lee ) |
|
|
|
|
| Abstract |
|
The present paper will concern the venous changes in the arteriovenous crossings, argyrophilic perivasccular network, exogenous retinal vasculitis and arteriolar annulus. Material for the study of arteriovenous crossings was obtained post mortem (19 eyes), which was offered from department of ophthalmology, medical faculty, Kyushu University in Japan, while an eye for the study of vascular changes with traumatic global rupture foHowing to exogenous purulent retinal vasculitis was obtained from eyes enucleated surgically. Material (10 eyes) for the study of argyrophilic perivascular network and arteriolar annuIi was obtained from dogs (5 eyes) and bovines (5 eyes). The technique of perparation of the slides was made of flat preparations of the retina that all nonvascular components were digested with tris- buffered 3%-trypsin solution and stained with PAS (periodic-acid Schiff), hematoxylin, eosin and Vilder's reticulin stain. Results obtained as follows. 1. Various degree of narrowing of the vein in arteriovenous crossing sites was observed in flat preparation of retinal vessels without any staining technique, which might be related to arteriolar sclerotic changes. 2. An encircling perivascular argyrophilic network consisting of wavy fibers and some externallyr interlacing argyrophilic longitudinal fibers were observed in dog retinal arterioles but coarser fibers in venules. Some strand-like intercapillary bridge was argyrophilic in Wilder's reticulin stain of the human retinal vessels. 3. Retinal venules and its capillaries in a 40-year-old man with traumatic global rupture following to purulent exogenous retinal vasculitis predominantly affected. The walls of capillaries had multiple aneurysmal dilatations, and in some ruptured area numerous basophilic bodies in H-E. stain were observed. The cells of abnormally dilated capillaries were missing over wide areas, and in some capillaries predominated loss of endothelial cells. 4. Arteriolar Annulus in positive for periodic-acid Schiff technique was hyper-cellularities in H-E. staining, which did not appear to be different from surrounding cells in arterioles. |
|
PDF Links
Download Citation
