首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   2篇
  免费   1篇
儿科学   1篇
特种医学   1篇
综合类   1篇
  2020年   1篇
  2000年   1篇
  1993年   1篇
排序方式: 共有3条查询结果,搜索用时 6 毫秒
1
1.
目的应用人眼追踪技术研制裸眼随机点立体视觉检查系统(glasses-free random dot stereo-test-system,GFRDSS),检测正常视力男性青年的5 m距离立体视锐度。方法在不同照度环境下检测230名正常视力、正常眼位男性青年的立体视锐度。观察组采用GFRDSS检测方法;对照组采用Distance Randot(DR)检测方法。结果GFRDSS可以检测视差范围40″~800″的5 m远距离立体视锐度。100~300 cd/m2照度下,与对照组[41.3%(95/230)]比较,观察组有83.91%(193/230)受检者立体视锐度达到正常水平(40″~60″),差异有统计学意义(Z=-9.569,P<0.05)。350~600 cd/m2照度下,与对照组[75.22%(173/230)]比较,观察组有84.78%(195/230)受检者立体视锐度达到60″,差异有统计学意义(Z=-4.048,P<0.05)。结论采用人眼追踪技术GFRDSS可以实现5 m距离无辅助立体视锐度检测,正常人群测试结果显示GFRDSS敏感性高于DR,且可以有效避免环境照度对检测的干扰。  相似文献   
2.
应用Titmus、Frisby及颜氏立体图对890名双眼视功能正常的3~12岁儿童做了立体视锐测定,我们认为儿童立体视成熟期在3岁以前;应用不同检测手段所得儿童立体视锐正常值不一致:Frisby及颜氏法为≤60秒,Titmus法为≤100秒,Frisby及颜氏法较Titmus法更适用于年幼儿童。  相似文献   
3.
The aim of the study is to examine the suitability of the Lang II Random Dot Stereotest for use by district nurses in primary healthcare centres. The Lang Stereotest is an inexpensive method. It is easy to apply, but the child's co-operation is required. Approximately 100 district nurses were given detailed information and instruction by an orthoptist prior to a randomized population-based community trial initiated in 1993. In the county of Uppsala in Sweden, all 4293 children born in 1990 were randomized to one of the following four study groups: intervention, control, reliability or validity. All children were followed from birth to 6.5 y of age with respect to the occurrence of strabismus. The kappa statistic for test-retest reliability among district nurses was 0.65 (95% CI, 0.51-0.80). A validation of the outcomes of district nurses' against orthoptists' examinations using the Lang Stereotest showed a sensitivity of 0.33 (95% CI, 0.09-0.65) and a specificity of 0.85 (0.80-0.89). Of 113 cases of strabismus, 53% were detected within the first 3 y of life. Examination of 1132 3-y-old children using the Lang Stereotest enabled the district nurses to detect 11 new cases of strabismus. Only one of these cases was referred to an orthoptist as a direct consequence of the screening. The Lang Stereotest showed low reliability and low validity in this community trial. It is concluded that the Lang II Random Dot Stereotest is not suitable for the screening of manifest strabismus in unselected populations of 3-y-old children in Sweden, where a large proportion of cases of strabismus is detected during the first 3 y of life.  相似文献   
1
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号