Monocular Visual Confusion for Field Expansion
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 13
- 试验地点
- 1
- 主要终点
- Percentage of Total Viewing Time That Peripheral Target is Perceived
研究概览
简要总结
In this research study we want to test how people understand a visual scene when the same image is presented to both the eyes, but portions of these images are altered in terms of contrast, depth or in some cases motion.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 年龄范围
- 14 Years 至 —（Child, Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Better than 20/40 visual acuity in the worse eye
- •No restrictions of the peripheral visual field: (at least 60 degrees vertically and 40 degrees horizontally)
- •At least 14 years of age (no upper age limit)
- •Able to give voluntary, informed consent
- •Able to understand English
- •Binocular vision parameters within normal limits (Stereopsis ≤ 100 arc sec on any stereo test)
排除标准
- •Patients with any physical or mental disabilities, including cognitive dysfunction, balance problems, or other deficits that could impair their ability to respond to the stimuli presented in this study will be excluded
- •Being unable to complete sessions lasting 2-3 hours
研究组 & 干预措施
Visual confusion
Participants viewed peripheral targets in three different visual confusion conditions (three interventions): binocular visual confusion (unilateral opaque target), unilateral monocular visual confusion (unilateral see-through target), and bilateral monocular visual confusion (bilateral see-through target). Each intervention was presented twice in a randomized order, resulting in a total of six trials. During each trial, a peripheral target was presented in front of a forward-moving background for one minute. Participants were instructed to hold down the controller button while the target was visible and release it when a third or more of the target disappeared. After each trial, participants could take a brief break before the next trial in a different visual confusion condition was presented in a randomized order.
干预措施: Binocular visual confusion (unilateral opaque) (Behavioral)
Visual confusion
Participants viewed peripheral targets in three different visual confusion conditions (three interventions): binocular visual confusion (unilateral opaque target), unilateral monocular visual confusion (unilateral see-through target), and bilateral monocular visual confusion (bilateral see-through target). Each intervention was presented twice in a randomized order, resulting in a total of six trials. During each trial, a peripheral target was presented in front of a forward-moving background for one minute. Participants were instructed to hold down the controller button while the target was visible and release it when a third or more of the target disappeared. After each trial, participants could take a brief break before the next trial in a different visual confusion condition was presented in a randomized order.
干预措施: Unilateral monocular visual confusion (unilateral see-through) (Behavioral)
Visual confusion
Participants viewed peripheral targets in three different visual confusion conditions (three interventions): binocular visual confusion (unilateral opaque target), unilateral monocular visual confusion (unilateral see-through target), and bilateral monocular visual confusion (bilateral see-through target). Each intervention was presented twice in a randomized order, resulting in a total of six trials. During each trial, a peripheral target was presented in front of a forward-moving background for one minute. Participants were instructed to hold down the controller button while the target was visible and release it when a third or more of the target disappeared. After each trial, participants could take a brief break before the next trial in a different visual confusion condition was presented in a randomized order.
干预措施: Bilateral monocular visual confusion (bilateral see-through) (Behavioral)
结局指标
主要结局
Percentage of Total Viewing Time That Peripheral Target is Perceived
时间窗: Approximately 1-2 sessions to finish total 6 trials, up to 2 hours for each session, any time within the 4month study period
(Total time the peripheral target in the visual confusion condition was visible) / (total viewing time (=1 min))
次要结局
未报告次要终点
研究者
Jaehyun Jung
Assistant Professor
Massachusetts Eye and Ear Infirmary