Assessment of Cyclofusion Capabilities of Normal Subjects and Patients With 3D Dynamic Random-dot Stereograms
试验速览
- 阶段
- 不适用
- 入组人数
- 50
- 主要终点
- In- and excyclofusion competence in healthy individuals. Change in In- and excyclofusion competence in patients who need a strabismus surgery before and 6 month after surgery.
研究概览
简要总结
With this study the investigator wants measure the individual cyclofusion competence from healthy subjects and patients suffering from Strabismus with a only binocularly visible threedimensional Landolt-C stimulus. For this the participant has to look at a 3-D monitor with shutter glasses. The participant is sitting in 2 meter distance in front of the monitor. On the monitor appears the Landolt-C stimulus as a dynamic Random-Dot Stimulus. As long as the participant can fuse the stimulus he will be able to see the Landolt C-ring threedimensional. The participant is then ask to tell in which direction the notch of the Landolt-C ring points out. Once a critical degree of cyclotorsion is reached the participant will no longer be able to see the Landolt C ring and the individual cyclofusion competence is reached.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Diagnostic
- 盲法
- None
入排标准
- 年龄范围
- 12 Years 至 —（Child, Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Visual acuity >0,4; Stereopsis
排除标准
- •Visual acuity <0,4; no Stereopsis
研究组 & 干预措施
Cyclofusion
干预措施: measurement of the cyclofusion (Diagnostic Test)
结局指标
主要结局
In- and excyclofusion competence in healthy individuals. Change in In- and excyclofusion competence in patients who need a strabismus surgery before and 6 month after surgery.
时间窗: Once in healthy individuals. Before and 6 month after a (independent from the study) performed strabismus surgery.
The maximum in- and maximum excyclofusion competence will be measured with the described test set-up. The results will be documented in degree.
次要结局
未报告次要终点
研究者
Prof. Dr. Veit Sturm
Prof. Dr.
Cantonal Hospital of St. Gallen