排序方式: 共有24条查询结果,搜索用时 15 毫秒
11.
Purpose
To quantify the influence of soft lens rigidity and power on the difference between intraocular pressure values (ΔIOP) obtained by non-contact tonometry through soft lenses in situ and over the cornea (IOP).Methods
Both eyes of 25 patients, attending for either routine contact lens check up, were fitted with a (I) low water content silicone hydrogel lenses of relatively high modulus of rigidity (modulus of rigidity 1.2 MPa, Focus Night and Day, Cibavision) and (II) high water content daily disposable of relatively low modulus of rigidity (0.91 MPa, Focus Dailies, Cibavision). IOP measurements were taken over the cornea and repeated over the lens after insertion. Lens powers ranged from −7.50 D to +6.00 D.Results
ANOVA revealed ΔIOP was associated with both lens power and material (p < 0.05). Multiple linear regression revealed relationships between ΔIOP (y) lens power (x1) and IOP (x2) as follows- (I), right eyes,
- y = 0.899x1 − 0.172x2 + 5.659 (F = 15.615, r = 0.766, p < 0.001, n = 25)
- (I), left eyes,
- y = 0.993x1 − 0.101x2 + 4.694 (F = 23.368, r = 0.825, p < 0.001, n = 25)
- (II) right eyes,
- y = 0.399x1 − 0.370x2 + 6.595 (F = 11.804, r = 0.719, p < 0.001, n = 25)
- (II) left eyes,
- y = 0.5611 − 0.225x2 + 4.153 (F = 28.736, r = 0.723, p < 0.001, n = 25)
Conclusion
ΔIOP appears to be related to lens power, material and to a lesser extent IOP. Practitioners should derive their own empirical relationship between ΔIOP, lens power and IOP for the specific types of soft lenses they commonly use. This would improve efficiency in the screening of IOP in more susceptible soft lens wearers. 相似文献12.
植入式眼压检测微系统是一种植入到眼内进行眼内压连续检测并通过电磁波传输到体外的微系统。根据该系统近些年的研究进展对该系统进行综述,介绍了该系统常采用的LC振荡结构和SoC结构的原理和发展历程,并对其主要技术指标和制作工艺以及存在问题进行论述;结合生物电磁效应、MEMS技术和集成电路技术等,综合分析了SoC系统的天线、电路系统和压力传感器等关键技术的发展现状、存在的问题和突破方向;对生物兼容性材料和植入位置等应用层面进行总结和展望;最后根据对该系统存在问题的总结,对该系统的发展趋势进行展望。 相似文献
13.
14.
针对河北省西柏坡发电厂300MW机组HN3070计算机双机监视系统进行了分析。该系统采用了与法国SEMS公司SOIAR16小型机完全兼容的HN3070机为主机,内部配以先进的微程序选件和IOP处理器、系统为主辅双机配置,辅机自动监视主机运行状态,当主机故障,辅机在5秒钟内自动接管系统继续运行,实现对机组运行参数在线实时监测,故障报警,事故追忆等. 相似文献
15.
16.
17.
18.
19.
20.