期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Corneal topographic changes and surgically induced astigmatism following combined phacoemulsification and 25-gauge vitrectomy 被引量:1
1
作者 Khulood Mohammed Sayed Mahmoud M.Farouk +3 位作者 Takashi Katome Toshihiko Nagasawa takeshi naito Yoshinori MitamurA 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2017年第1期72-76,共5页
AIM: To evaluate corneal topographic changes and surgically induced astigmatism (SIA) after combined phacoemulsification and 25-gauge transconjunctival sutureless vitrectomy (25-G TSV).METHODS: A retrospective s... AIM: To evaluate corneal topographic changes and surgically induced astigmatism (SIA) after combined phacoemulsification and 25-gauge transconjunctival sutureless vitrectomy (25-G TSV).METHODS: A retrospective study on 96 eyes of 87 patients who underwent combined phacoemulsification and 25-G TSV. The different topographic parameters and SIA were analyzed pre- and postoperatively.RESULTS: There was no significant changes in corneal topographic parameters at different follow up periods. Only surface regularity index changed significantly in the 2nd postoperative week and then returned to baseline values thereafter. Mean SIA gradually decreased to reach 0.12 D by the 6th postoperative month.CONCLUSION: Corneal surface and astigmatic changes are insignificant in either early or late postoperative periods following combined phacoemulsification and 25-G TSV. The SIA was the minimum among previous reports on sutureless vitrectomy alone or combined with phacoemulsification. Improvement of SIA did not stop at the 3rd postoperative month but it continued till the 6th month postoperatively. 展开更多
关键词 Corneal topographic indices surgicallyinduced astigmatism 25-gauge sutureless vitrectomy PHACOEMULSIFICATION
下载PDF
近表面具有内氧化物和非马氏体显微组织的渗碳钢的疲劳性能
2
作者 takeshi naito HIDEO UEDA +1 位作者 MASAO KIKUCHI 谢燮揆 《热处理技术与装备》 1985年第6期5-11,共7页
本文通过回转弯曲疲劳试验描述了在近表面具有内氧化物和非马氏体显微组织的渗碳淬火钢的疲劳特性。S—N曲线显示出了两个折点,试样能持续到10~7应力周次以上,甚至在10~8应力周次条件下都未求得疲劳极限。该试验结果与没有反常表面组织... 本文通过回转弯曲疲劳试验描述了在近表面具有内氧化物和非马氏体显微组织的渗碳淬火钢的疲劳特性。S—N曲线显示出了两个折点,试样能持续到10~7应力周次以上,甚至在10~8应力周次条件下都未求得疲劳极限。该试验结果与没有反常表面组织者对比,表明了反常组织对渗碳钢疲劳性能的影响。 展开更多
关键词 显微组织 表面组织 金相组织 反常组织 马氏体 金相相组成 渗碳钢 疲劳性能
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部