BACKGROUND Anterior ischemic optic neuropathy(AION)is a group of ophthalmic diseases in which the optic nerve is injured causing blindness.However,the pathogenesis,clinical manifestations,and clinical treatments of AI...BACKGROUND Anterior ischemic optic neuropathy(AION)is a group of ophthalmic diseases in which the optic nerve is injured causing blindness.However,the pathogenesis,clinical manifestations,and clinical treatments of AION are yet elusive.Only a few related experimental or clinical reports are available on the disease.In this study,spectral domain optical coherence tomography(SD-OCT)was used to examine the morphology of thickness swelling and atrophic changes of macular ganglion cell complex(mGCC)in the different stages of AION that were then compared with the visual fields.Thus,the clinical value of mGCC examination was alleged to be similar to that of the visual field.AIM To explore the mGCC injury at different stages in AION and the clinical significance.METHODS Cases with AION were analyzed in a retrospective study.SD-OCT was used to analyze the correlation between mGCC and peripapillary retinal nerve fiber layer thicknesses at different stages of AION and the changes in the corresponding stages of visual fields.RESULTS A total of 21 cases(28 eyes)presented AION.The onset time of AION was defined as early stage(within 3 wk of onset),middle stage(from 3 wk to 2 mo),and late stage(disease span>2 mo).In the early stage,the mGCC thickness of SD-OCT was within the normal high limit,and the perioptic nerve fibers thickness was more than the normal.The changes in the visual field in early stage were not consistent with the swelling changes in mGCC and peri-disc nerve fibers.In addition,atrophy and thinning appeared in mGCC,and the perioptic nerve fibers were swollen.However,the thickness was lower in the middle period than that in the early stage.The change in visual field was consistent with that of mGCC in this period.In the late stage,mGCC shrank and thinned,and the thickness of the nerve fibers around the optic disc in the corresponding region shrank and thinned.CONCLUSION The changes in mGCC thickness in patients with AION showed early,middle,and late stages of development by SD-OCT.Although the early stage visual field changes of AION were not consistent with the swelling changes of mGCC,the horizontal delimitation or annular atrophy of mGCC was consistent with that in the middle and late stage of the disease.The atrophy of peripheral nerve fibers was later than that of the mGCC atrophy.展开更多
文摘BACKGROUND Anterior ischemic optic neuropathy(AION)is a group of ophthalmic diseases in which the optic nerve is injured causing blindness.However,the pathogenesis,clinical manifestations,and clinical treatments of AION are yet elusive.Only a few related experimental or clinical reports are available on the disease.In this study,spectral domain optical coherence tomography(SD-OCT)was used to examine the morphology of thickness swelling and atrophic changes of macular ganglion cell complex(mGCC)in the different stages of AION that were then compared with the visual fields.Thus,the clinical value of mGCC examination was alleged to be similar to that of the visual field.AIM To explore the mGCC injury at different stages in AION and the clinical significance.METHODS Cases with AION were analyzed in a retrospective study.SD-OCT was used to analyze the correlation between mGCC and peripapillary retinal nerve fiber layer thicknesses at different stages of AION and the changes in the corresponding stages of visual fields.RESULTS A total of 21 cases(28 eyes)presented AION.The onset time of AION was defined as early stage(within 3 wk of onset),middle stage(from 3 wk to 2 mo),and late stage(disease span>2 mo).In the early stage,the mGCC thickness of SD-OCT was within the normal high limit,and the perioptic nerve fibers thickness was more than the normal.The changes in the visual field in early stage were not consistent with the swelling changes in mGCC and peri-disc nerve fibers.In addition,atrophy and thinning appeared in mGCC,and the perioptic nerve fibers were swollen.However,the thickness was lower in the middle period than that in the early stage.The change in visual field was consistent with that of mGCC in this period.In the late stage,mGCC shrank and thinned,and the thickness of the nerve fibers around the optic disc in the corresponding region shrank and thinned.CONCLUSION The changes in mGCC thickness in patients with AION showed early,middle,and late stages of development by SD-OCT.Although the early stage visual field changes of AION were not consistent with the swelling changes of mGCC,the horizontal delimitation or annular atrophy of mGCC was consistent with that in the middle and late stage of the disease.The atrophy of peripheral nerve fibers was later than that of the mGCC atrophy.
文摘目的应用三维光学相干断层扫描(optical coherence tomography,OCT)测量原发性开角型青光眼(primary open angle glaucoma,POAG)患者的黄斑区各部位神经节细胞复合体(macular ganglion cell complex,m GCC)厚度,评价其在POAG诊断中的意义。方法选取早期POAG患者30例(30眼),中晚期POAG患者30例(30眼),以正常人30例(30眼)作为对照,应用Topcon 3D OCT-2000测量并记录所有受试者的视盘周围各部位视网膜神经纤维层(peripapillary retinal never fiber layer,pRNFL)和m GCC[包括黄斑区视网膜神经纤维层(macular retinal never fiber layer,mRNFL)、黄斑区神经节细胞层+内丛状层(ganglion cell layer with the inner plexiform layer,GCIP)、神经节细胞复合体(ganglion cell complex,GCC)]厚度,并对所有数据进行统计分析,应用受试者工作特征曲线下面积(area under the receiver operating characteristic curve,AUROC)评价各参数对POAG的诊断效力。结果早期、中晚期POAG患者各部位的pRNFL厚度及m GCC厚度值随着青光眼的严重程度逐渐变薄。早期POAG患者与正常人相比,除了mRNFL厚度和部分pRNFL厚度(鼻侧和颞侧)参数差异无统计学意义(均为P>0.05)外,其余的各项参数间差异均有统计学意义(均为P<0.05)。中晚期POAG患者与正常人相比、早期POAG患者与中晚期POAG患者相比,各项参数间差异均有统计学意义(均为P<0.05)。早期POAG患者mRNFL、GCIP、GCC、pRNFL平均值的AUROC值分别为0.641、0.731、0.724、0.775;中晚期为0.931、0.830、0.915、0.947。早期POAG患者mRNFL、GCIP、GCC最小值的AUROC值分别为0.674、0.746、0.732,中晚期为0.942、0.841、0.928,均高于其平均值的AUROC值。除了鼻侧及颞侧pRNFL厚度参数外,其余各项参数均能有效地诊断POAG,差异均有统计学意义(均为P<0.05)。结论 mGCC厚度参数与pRNFL厚度参数对POAG的诊断效力相当,可作为POAG诊断的一个新指标。
