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find Keyword "视网膜" 2754 results
  • Vitreous surgery for severe ocular trauma

    Objective To summarize the visual outcome of patients with severe ocular trauma treated with vitreous surgery. Methods Clinical data of 188(191 eyes) with severe ocular trauma treated with vitreous surgery in a period from November 1996 to April 1998 were analysed retrospectively. Results The study included penetrating injury in 56 eyes, foreign bodies in the posterior segment in 70 eyes, blunt injury in 41 eyes , and globe rupture in 24 eyes. Main complications included endophthalmitis in 35 eyes, choroidal bleeding in 20 eyes, retinal detachment in 60 eyes, and vitreous hemorrhage in 97 eyes. Post-opera-tively, out of 188 eyes, except for 3 of patients too young to examine, visual acuity improved in 133(70.7%), including 85(45.2%) with visal acuity 0.02-1.0, 46(24.5%) remained unchanged; and 9(4.8%) had worse vision. Among 34 with no-light-perception, 12 had light-perception or over. Conclusion A majority of severe trauma eyes can be salvaged with considerable visual recovery after adequate and timely vitreous surgery. (Chin J Ocul Fundus Dis,1999,15:4-6)

    Release date:2016-09-02 06:08 Export PDF Favorites Scan
  • Comparison of axial length measurement by Lenstar and contact A-scan in patients with idiopathic macular hole

    Objective To compare the axial length (AL) measured by Lenstar and contact AScan in the patients with idiopathic macular hole and study the correlation between the difference of the two measurements and the foveal thickness measured by optical coherence tomography (OCT). Methods Twenty-seven eyes of 26 idiopathic macular hole patients (IMH group) and 27 eyes of 25 patients with mild cataract (control group) were enrolled in this study. Foveal thickness was measured with 3D OCT. The AL was measured by Lenstar and contact A-Scan, and the consistency of the two measurements was determined by Bland-Altman analysis. The correlation between the difference of the two measurements and foveal thickness was analyzed by Pearson correlation analysis. Results Mean foveal thickness of IMH and control eyes were (372.85±60.02) μm and (243.44±22.50) μm, respectively. The difference between the foveal thickness of the two groups was highly significant (t=-10.490,P<0.001). In the IMH group, the AL measured by Lenstar and contact A-Scan were (23.20±1.12) mm and (23.18±1.13) mm, respectively, the difference between the two measurements was not statistically significant (t=-0.549,P=0.588), whereas in the control group, the AL was (23.41±0.72) mm by Lenstar and (23.33±0.74) mm by contact A-Scan, the two measurements were significantly different (t=-4.832,P<0.001). However, no correlation was found by Pearson correlation analysis between the difference of the two measurements and the foveal thickness in either IMH or control group (r=0.181,-0.141;P>0.05). ConclusionsAlthough there is no difference of axial length measurements using Lenstar and contact A-Scan in IMH eyes, in clinical measurements the results of two instruments should be taken into comprehensive consideration.

    Release date:2016-09-02 05:22 Export PDF Favorites Scan
  • Effects of culture medium of amniotic cells on NO and NOS in retina tissues in vitro

    Objective To observe the effects of culture medium of amniotic cells on NO and NOS in retinal tissues of rabbits in vitro in order to provide a protective method for antioxidation in retina transplantation. Methods Thirty adult healthy rabbits (30 right eyes) were divided into 3 groups. Group I: fresh retinal tissue; group II: routine culture medium; group III: culture medium of amniotic cells. The retinal tissues in group II and III were cultured in the corresponding culture medium for 1 week. The content of NO and NOS in retinal tissues in the 3 groups were determined. Results Compared with group I, the content of NO and NOS of group II increased obviously (t=3.821, 3.854; P<0.001). There was no statistical difference of content of NO and NOS between group I and III (t=1.657, 1.745; P>0.05). Conclusion Culture medium of amniotic cells may remove free radicals and enhance the ability of antioxidation. (Chin J Ocul Fundus Dis,2004,20:366-368)

    Release date:2016-09-02 05:58 Export PDF Favorites Scan
  • Cell cycle arrest of retinal vascular endothelial cell of 8~20 weeks diabetic rats

    Purpose To study changes of cell cycle of vascular endothelial cell in non-proliferative diabetic retinopathy. Methods Alloxan induced Wistar-rats were employed and immunohistochemistry,Western blotting methods were used. Results The vascular endothelial cells of retinas of 8~20 weeks diabetic rats were observe to be cyclinD1,cyclinD3,cyclinB1,p21 and p27 positive stained with light and electronmicroscopies.CyclinE immuno-stained vascular endothelial cells was observed occasionally.Meanwhile,the evidences of morphologic changes of the vascular en dothelial cells were proved:less plasma,thinner cell,more bubble organelles than those of controls.But,the ultra-structures of pericytes and other type of retinal cells did not change and they also immunostain negative.Komas blue and Western blotting methods also proved that the vascular endothelial cells of retina of 20th week diabetic rats expressed cyclinD1,cyclinB1,p21 and p27 protein. Conclusion Glucose induced retinal vascular endothelial cells of 8~20th weeks diabetic rats enter cell cycle and were arrested at G1/S restriction point.This study also suggested that retinal vascular endothelial cells may possess the ability to resist glucose damage and mechanism of selfstability during very early stage of diabetes. (Chin J Ocul Fundus Dis,2000,16:173-176)

    Release date:2016-09-02 06:05 Export PDF Favorites Scan
  • 高度近视与非对称性糖尿病视网膜病变的关系

    Release date:2016-09-02 05:25 Export PDF Favorites Scan
  • 直肌止点注射地塞米松致视网膜动脉痉挛一例

    Release date:2016-09-02 05:58 Export PDF Favorites Scan
  • 大面积视网膜有髓鞘神经纤维一例

    Release date:2016-09-02 06:00 Export PDF Favorites Scan
  • 老年患者原发性视网膜脱离60例分析

    Release date:2016-09-02 06:05 Export PDF Favorites Scan
  • 急性视网膜坏死一例

    Release date:2016-09-02 05:58 Export PDF Favorites Scan
  • 糖尿病大鼠脉络膜病变超微结构的研究

    Release date:2016-09-02 05:52 Export PDF Favorites Scan
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