Head mounted display apparatus for visual field test

描述（由申请人提供）：这个二期SBIR项目的目标是设计、开发、测试和演示一种轻型、低成本、头戴式视野测试设备的临床应用。HMDField设备集成了商用现成的硬件组件（高性能头戴式显示器和眼动仪），以及用于数据收集的交互式计算机程序。该软件是为个人计算机设计的，允许实施各种测试策略和测试刺激。该仪器允许患者头部和身体前所未有的自由运动，从而最大限度地减少甚至消除传统视野测试系统常见的压力和疲劳。眼动仪可以实时监测注视（凝视方向）。在新的视觉抓取模式中，它被用来捕捉对光刺激的反应，从而提供依赖于视觉抓取反射的免提和高度直观的操作模式。在第一阶段的可行性论证成功之后，第二阶段的工作将集中在HMDField设备的全功能生产原型的开发，包括硬件和软件集成，以及其在青光眼诊断中的应用的临床测试。患者和临床医生对这种新型设备的接受程度也将进行评估。公共卫生相关性：视野测试是眼科和验光的基本诊断工具之一，对青光眼的检测尤其有用。视野测试如果易于实施，也将在神经外科和普通医学中有很大的用途。这里提出的HMDField设备是简化测试程序和使其更加用户友好的重要一步。体重轻、活动自由和免提操作对老年人和残疾和/或不能活动的患者尤为重要。

DESCRIPTION (provided by applicant): The goal of this Phase II SBIR project is to design, develop, test and demonstrate clinical use of a lightweight, low cost, head mounted perimeter (apparatus for visual field test). The HMDField device integrates commercial off-the-shelf hardware components (high performance head mounted display and eye tracker), and an interactive computer program for data collection. The software is designed for a personal computer and permits implementation of a variety of testing strategies and test stimuli. The apparatus allows the patient an unprecedented freedom of movement of the head and body, thus minimizing or even eliminating the stress and fatigue common with the conventional visual field testing systems. Eye tracker enables real-time monitoring of fixation (gaze direction). In the novel visual grasp mode, it is used to capture responses to the light stimuli, thus providing hands-free and highly intuitive mode of operation that relies on the visual grasp reflex. Following successful Phase I feasibility demonstration, Phase II effort will concentrate on development of a fully functional production prototype of the HMDField apparatus, including hardware and software integration, and on clinical tests of its utility in diagnosis of glaucoma. Acceptance of this novel device by patients and clinicians will also be evaluated. PUBLIC HEALTH RELEVANCE: The visual field test is one of the basic diagnostic tools of ophthalmology and optometry and is especially useful in the detection of glaucoma. The visual field test, if easily administered, would also have great use in neurosurgery and general medicine. The HMDField device proposed here is a major step in simplifying the test procedure and in making it more user-friendly. Low weight, freedom of movement and hands-free operation are of particular importance for the elderly and for disabled and/or immobilized patients.