A Comparison of Dynamic Vision Between College Athletes & Controls
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 145
- 试验地点
- 2
- 主要终点
- 6 Condition BESS
研究概览
简要总结
The purpose of this study is to establish baseline reference values for tests of static and dynamic visual acuity and gaze stabilization in collegiate athletes and non-athletes, and to determine if there are differences in vision scores between collegiate athletes and non-athletes with and without a history of concussion.
详细描述
An IRB-approved human subjects study (IRB-FY 20-339) was designed to investigate dynamic vision pre-and post-concussion in collegiate athletes. In addition to examining if there are changes in objective tests of dynamic vision after concussion, it is important to determine if there are baseline differences in dynamic vision objective tests when comparing collegiate athletes and similar-aged controls. Dynamic vision will be assessed through the administration of the Dynamic Visual Acuity (DVA) test and the Gaze Stabilization Test (GST). Baseline testing of GST and DVA is performed using the Bertec Vision Advantage TM system. Athletes are eligible to participate if they are currently enrolled students, actively participating on specified teams, provide consent to participate, and are able to complete the testing protocol. Non-athlete control subjects are students enrolled in a Doctor of Physical Therapy (DPT) program and serve as a sample of convenience.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- — 至 30 Years（Child, Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Currently a California State University Northridge student
- •Provide consent to participate Able to complete the testing protocol.
排除标准
- •Unable to complete entirety of testing protocol.
- •The subject is unable to attain a minimum of 85 degrees per second of horizontal head rotation when performing the DVA test.
结局指标
主要结局
6 Condition BESS
时间窗: August 15, 2021 - August 15, 2024
Number of errors and time subject was able to hold position Number of errors and time subject was able to hold position Number of errors and time subject was able to hold position
Dynamic Visual Acuity (DVA)
时间窗: August 31, 2021 - May 15, 2024
Subjects move their head at approximately 85 degrees per second per the standard test protocol. A metronome automatically generated by the computer assists in maintaining the correct head speed. When the sensor identifies 85 deg/sec, an optotype appears on the screen and the subject verbally identifies the optotype's orientation. This continues with progressively smaller sized letter until the athlete is no longer able to correctly identify the orientation. The computerized system uses a convergence algorithm to determine the accuracy of the response requiring 3 correct answers at the smallest letter size to assign a result. The computer then compares each subject's DVA score to their SVA, which is expressed a Log of minimal angle resolvable units (LogMAR). Simply, the computer considers the number of lines on an eye chart that are lost with head moving (DVA) compared to the head steady condition, known as static visual acuity (SVA)
次要结局
- Gaze Stabilization Test (GST)(August 15, 2021 - August 15, 2024)
- Gaze Stabilization Test (GST)(August 31, 2021 - May 15, 2024)
- Static Visual Acuity (SVA) test(August 31, 2021 - May 15, 2024)
研究者
Aimie Kachingwe
Primary Investigator
California State University, Northridge