AIM:To assess the differences in average and sectoral peripapillary retinal nerve fiber layer(p RNFL)thickness using spectral domain optical coherence tomography(SD-OCT)in patients with non-arteritic anterior ischemic...AIM:To assess the differences in average and sectoral peripapillary retinal nerve fiber layer(p RNFL)thickness using spectral domain optical coherence tomography(SD-OCT)in patients with non-arteritic anterior ischemic neuropathy(NAION)compared with those with primary open angle glaucoma(POAG).METHODS:A comprehensive literature search of the Pub Med,Cochrane Library,and Embase databases were performed prior to October,2021.Studies that compared the p RNFL thickness in NAION eyes with that in POAG eyes with matched mean deviation of the visual fields were included.The weighted mean difference(WMD)with 95%confidence interval(CI)was used to pool continuous outcomes.RESULTS:Ten cross-sectional studies(11 datasets)comprising a total of 625 eyes(278 NAION eyes,347 POAG eyes)were included in the qualitative and quantitative analyses.The pooled results demonstrated that the superior p RNFL was significantly thinner in NAION eyes than in POAG eyes(WMD=-6.40,95%CI:-12.22 to-0.58,P=0.031),whereas the inferior p RNFL was significant thinner in POAG eyes than in NAION eyes(WMD=11.10,95%CI:7.06 to 15.14,P≤0.001).No difference was noted concerning the average,nasal,and temporal p RNFL thickness(average:WMD=1.45,95%CI:-0.75 to 3.66,P=0.196;nasal:WMD=-2.12,95%CI:-4.43 to 0.19,P=0.072;temporal:WMD=-1.24,95%CI:-3.96 to 1.47,P=0.370).CONCLUSION:SD-OCT based evaluation of inferior and superior p RNFL thickness can be potentially utilized to differentiate NAION from POAG,and help to understand the different pathophysiological mechanisms between these two diseases.Further longitudinal studies and studies using eight-quadrant or clock-hour classification method are required to validate the obtained findings.展开更多
[目的]基于MOD17A3数据研究陕北地区植被净初级生产力(NPP)。[方法]基于利用2000—2010年MOD17A3数据集的年均NPP数据和GIS技术定量分析了陕北植被NPP的时空变化特征。[结果]榆林市东南部及延安市中北部年平均NPP大部在151~250 g C/(m^2...[目的]基于MOD17A3数据研究陕北地区植被净初级生产力(NPP)。[方法]基于利用2000—2010年MOD17A3数据集的年均NPP数据和GIS技术定量分析了陕北植被NPP的时空变化特征。[结果]榆林市东南部及延安市中北部年平均NPP大部在151~250 g C/(m^2·a);延安市中南部年平均NPP大部在300 g C/(m^2·a)以上。延安、榆林市年NPP增加的面积都在90%以上,分别为92.9%、97.8%。2000与2010年的平均NPP相比,大部分地区是增加的,只有少部分地区是减少的。增加幅度在0~50 g C/(m^2·a)的地区为榆林市长城沿线一带,增加幅度在51~90 g C/(m^2·a)的地区为榆林市大部及延安市西北部,增加幅度在91~120 g C/(m^2·a)及>120 g C/(m^2·a)以上的主要分布在榆林市东南部及延安市中部;NPP降低的区域主要分布在延安市南部的桥山林区和黄龙林区。[结论]通过实施退耕还林等生态建设工程,陕北地区植被状况得到较好的改善。展开更多
目的:分析并比较翼状胬肉切除术联合羊膜移植术与单纯翼状胬肉切除术对原发性翼状胬肉患者眼表泪膜稳定性的影响。方法:将确诊为原发性翼状胬肉的69例患者随机分为两组,其中观察组采用翼状胬肉切除术联合羊膜移植术治疗,对照组单纯采用...目的:分析并比较翼状胬肉切除术联合羊膜移植术与单纯翼状胬肉切除术对原发性翼状胬肉患者眼表泪膜稳定性的影响。方法:将确诊为原发性翼状胬肉的69例患者随机分为两组,其中观察组采用翼状胬肉切除术联合羊膜移植术治疗,对照组单纯采用翼状胬肉切除术治疗。对两组的泪膜破裂时间(break-up time,BUT)、泪液分泌试验(Schimer I test,SIt)及术后病情的复发率进行对比分析。结果:术后10 d两组患眼均拆除缝线,角膜、结膜创面均完全修复,术后均未见明显的角巩膜溃疡坏死及眼肌损伤等并发症发生。观察组术后1个月及3个月的BUT、SIt均高于对照组,差异有统计学意义(P<0.05)。观察组术后6个月病情的复发率为5.7%(2/35),显著低于对照组的26.5%(9/34),差异有统计学意义(P<0.05)。结论:翼状胬肉切除术联合羊膜移植术治疗原发性翼状胬肉较单纯翼状胬肉切除术疗效更确切,安全性更高,能快速缓解眼部刺激不适感,提高术后眼表泪膜的稳定性。展开更多
基金Supported by National Natural Science Foundation of China(No.82070967No.81770930)+1 种基金National Natural Science Foundation of Hunan Province Grant(No.2020jj4788)China Hunan Provincial Science and Technology Department(No.2020SK2086)。
文摘AIM:To assess the differences in average and sectoral peripapillary retinal nerve fiber layer(p RNFL)thickness using spectral domain optical coherence tomography(SD-OCT)in patients with non-arteritic anterior ischemic neuropathy(NAION)compared with those with primary open angle glaucoma(POAG).METHODS:A comprehensive literature search of the Pub Med,Cochrane Library,and Embase databases were performed prior to October,2021.Studies that compared the p RNFL thickness in NAION eyes with that in POAG eyes with matched mean deviation of the visual fields were included.The weighted mean difference(WMD)with 95%confidence interval(CI)was used to pool continuous outcomes.RESULTS:Ten cross-sectional studies(11 datasets)comprising a total of 625 eyes(278 NAION eyes,347 POAG eyes)were included in the qualitative and quantitative analyses.The pooled results demonstrated that the superior p RNFL was significantly thinner in NAION eyes than in POAG eyes(WMD=-6.40,95%CI:-12.22 to-0.58,P=0.031),whereas the inferior p RNFL was significant thinner in POAG eyes than in NAION eyes(WMD=11.10,95%CI:7.06 to 15.14,P≤0.001).No difference was noted concerning the average,nasal,and temporal p RNFL thickness(average:WMD=1.45,95%CI:-0.75 to 3.66,P=0.196;nasal:WMD=-2.12,95%CI:-4.43 to 0.19,P=0.072;temporal:WMD=-1.24,95%CI:-3.96 to 1.47,P=0.370).CONCLUSION:SD-OCT based evaluation of inferior and superior p RNFL thickness can be potentially utilized to differentiate NAION from POAG,and help to understand the different pathophysiological mechanisms between these two diseases.Further longitudinal studies and studies using eight-quadrant or clock-hour classification method are required to validate the obtained findings.
文摘[目的]基于MOD17A3数据研究陕北地区植被净初级生产力(NPP)。[方法]基于利用2000—2010年MOD17A3数据集的年均NPP数据和GIS技术定量分析了陕北植被NPP的时空变化特征。[结果]榆林市东南部及延安市中北部年平均NPP大部在151~250 g C/(m^2·a);延安市中南部年平均NPP大部在300 g C/(m^2·a)以上。延安、榆林市年NPP增加的面积都在90%以上,分别为92.9%、97.8%。2000与2010年的平均NPP相比,大部分地区是增加的,只有少部分地区是减少的。增加幅度在0~50 g C/(m^2·a)的地区为榆林市长城沿线一带,增加幅度在51~90 g C/(m^2·a)的地区为榆林市大部及延安市西北部,增加幅度在91~120 g C/(m^2·a)及>120 g C/(m^2·a)以上的主要分布在榆林市东南部及延安市中部;NPP降低的区域主要分布在延安市南部的桥山林区和黄龙林区。[结论]通过实施退耕还林等生态建设工程,陕北地区植被状况得到较好的改善。
文摘目的:分析并比较翼状胬肉切除术联合羊膜移植术与单纯翼状胬肉切除术对原发性翼状胬肉患者眼表泪膜稳定性的影响。方法:将确诊为原发性翼状胬肉的69例患者随机分为两组,其中观察组采用翼状胬肉切除术联合羊膜移植术治疗,对照组单纯采用翼状胬肉切除术治疗。对两组的泪膜破裂时间(break-up time,BUT)、泪液分泌试验(Schimer I test,SIt)及术后病情的复发率进行对比分析。结果:术后10 d两组患眼均拆除缝线,角膜、结膜创面均完全修复,术后均未见明显的角巩膜溃疡坏死及眼肌损伤等并发症发生。观察组术后1个月及3个月的BUT、SIt均高于对照组,差异有统计学意义(P<0.05)。观察组术后6个月病情的复发率为5.7%(2/35),显著低于对照组的26.5%(9/34),差异有统计学意义(P<0.05)。结论:翼状胬肉切除术联合羊膜移植术治疗原发性翼状胬肉较单纯翼状胬肉切除术疗效更确切,安全性更高,能快速缓解眼部刺激不适感,提高术后眼表泪膜的稳定性。
