Evaluation of a Head Mounted Electronic Visual Enhancement Device in Low Vision Patients
试验速览
- 阶段
- 不适用
- 状态
- 终止
- 入组人数
- 8
- 主要终点
- Best Corrected Visual Acuity (BCVA) With the Head-mounted Electronic Visual Enhancement Device
研究概览
简要总结
This study will be a prospective, non-randomized study of low-vision individuals diagnosed with either age-related macular degeneration (AMD) or diabetic macular edema with ETDRS visual acuity from 20/60 to 20/400 in both eyes from the University of Texas - Southwestern (UTSW) Medical Center at Dallas. Specifically, the primary objective of this testing is to establish the benefits of a wide field-of-view (FOV) monocular head-mounted visual enhancement device display (HMD), aiding the most degraded eye, as compared to best corrected visual acuity with glasses. It should be noted that in this approach, the HMD incorporates a camera, mounted coaxially with the visual axis of the eye with worse vision, and also image-enhancing or correction algorithms. Following review and execution of the informed consent, each subject will undergo an examination of their eyes, including: 1) ETDRS Best-corrected distance visual acuity; 2) Best-corrected near visual acuity; 3) Tests based on questions 5,6,7 and 11 of the National Eye Institute 25-item visual function questionnaire (NEI VFQ-25).
详细描述
A single visit, prospective, non-randomized study of low vision individuals diagnosed with Age Related Macular Degeneration or Diabetic macular edema research project is designed to last about 1.5 hours. All testing will be used for research purposes. There will be an 1) Early Treatment Diabetic Retinopathy Study visual acuity test, 2) near vision test, 3) Testing based on questions 5,6,7, and 11 of the National Eye Institute 25 item visual function questionnaire, (NEI VFQ-25) which includes a speed reading test, identifying objects, physically taking them and returning the items to correct original placement, once with glasses only, once with the head mounted visual device placed over the worst eye visually. There will also be an video tracks showing a conversation between 2 individuals - Subjects will be queried about the facial expressions of the actors during the conversation. The device is a wide field of view (FOV) monocular head-mounted visual enhancement device (HMD). The HMD has a camera mounted coaxially with the visual axis of the worse vision eye, and also image enhancing or correction algorithms. There are breaks planned between testing on the visual function exam portion of the NEI-25.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Supportive Care
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Patient of any sex, race, or ethnicity who are 18 years of age or older. Spanish speaking patients will be encouraged to participate, Spanish forms will be available to review and execute.
- •Patient willing to review, understand and sign written informed consent. Parents or legal guardians will consent on behalf of minors.
- •Written authorization for use or release of health and research study information.
- •Patient who volunteers is suffering from a posterior segment ophthalmic disorder including AMD and/or Diabetic Retinopathy and visual acuity from 20/60 to 20/400 in the better seeing eye.
排除标准
- •Subjects will be excluded if they are less than 18 years of age.
- •Subjects will not be considered for this research study if they will not review and execute the informed consent form.
- •During the screening process, subjects will be excluded from further consideration if they are identified with having a potential ophthalmic diagnosis other than age-related macular degeneration or diabetic macular edema that could be negatively affecting the visual testing.
- •ETDRS Visual Acuity better than 20/60 or worse than 20/400
- •During screening, subjects will be disqualified from further assessment if it is determined that their refractive error is outside of the -5.00 to +5.00 D corrective range.
研究组 & 干预措施
Vision Aided by a Head Mounted Device
A Head-Mounted Visual Enhancement Device developed by Evergaze Technology LLC has designed an electronic visual enhancement device that is compact and similar to glasses. It will be powered by a battery pack connected to the device. The electronic display will be affixed over only one of the user's eyes. The vision through the unobstructed eye will aid with the subject's balance and spatial orientation.
干预措施: Head-Mounted Visual Enhancement Device (Device)
结局指标
主要结局
Best Corrected Visual Acuity (BCVA) With the Head-mounted Electronic Visual Enhancement Device
时间窗: 5 minutes post intervention
ETDRS chart will be used to assess best corrected visual acuity. The outcome with the participant using head-mounted electronic visual enhancement device. The single visit, prospective, non-randomized study of low vision individuals diagnosed with Age Related Macular Degeneration or Diabetic macular edema research project is designed to last about 1.5 hours.
Number of Participants Able/Unable to Identify Facial Expressions With the Head-mounted Electronic Visual Enhancement Device.
时间窗: Day 1 up to 1 minute post intervention
Face sheet and video are shown to the subject to identify facial expression and time taken is recorded. Change in response speed to identify facial expressions using the head-mounted electronic visual enhancement device. A single visit, prospective, non-randomized study of low vision individuals diagnosed with Age Related Macular Degeneration or Diabetic macular edema research project is designed to last about 1.5 hours.
Number of Participants Completing/Not Completing the Reading Assessments With the Head-mounted Electronic Visual Enhancement Device
时间窗: Day 1 up to 6 minutes post intervention
Reading completion with head-mounted electronic visual enhancement device was measured by reading a standard paragraph from 3-Minute Reading Assessments by Rasinski TV and Padak N, 2005. Scholastic Inc., NY.
Response Speed to Visual-motor Skills to Identify Shapes and Objects With the Head-mounted Electronic Visual Enhancement Device
时间窗: Initial Baseline and 3 minutes
Portable shelf storage is placed at 5-feet distance and time taken to identify shapes and objects is recorded with the head-mounted electronic visual enhancement device. A single visit, prospective, non-randomized study of low vision individuals diagnosed with Age Related Macular Degeneration or Diabetic macular edema research project is designed to last about 1.5 hours.
Best Corrected Near Visual Acuity (BCNVA) With the Head-mounted Electronic Visual Enhancement Device
时间窗: 10 minutes post intervention
ETDRS chart will be used to assess best corrected visual acuity. The outcome with the participant using head-mounted electronic visual enhancement device. A single visit, prospective, non-randomized study of low vision individuals diagnosed with Age Related Macular Degeneration or Diabetic macular edema research project is designed to last about 1.5 hours.
次要结局
未报告次要终点
研究者
Rafael Ufret-Vincenty
Associate Professor of Medicine
University of Texas Southwestern Medical Center