Calibrated Oculomotor Laser Tracker

描述（由申请人提供）：眼动测试在世界范围内用于平衡和其他神经系统疾病的诊断筛选。测试参数直到最近才标准化，当时实施了一项新的美国标准。ANSI标准S3.45-1999定义了执行和报告用于评估人类眼球运动功能的一系列测试的程序。我们建议开发一种便携式的、可校准的、低成本的设备作为刺激和记录系统，用于符合新标准的动眼病测试。目标刺激将是一个激光二极管光斑，其投影位置由微控制器控制。波束扫描和定位能力将为水平和垂直扫视、追踪和注视眼球运动测试提供刺激。眼动直流眼电记录将由高质量的混合模拟-数字电路提供。为了便于携带，该系统将与笔记本电脑连接。将在个人电脑上提供图形用户界面，用于测试、分析和数据存储。10名正常受试者将使用该设备进行眼球运动测试，同时按照新标准要求的参数进行扫视、凝视和正弦跟踪测试。每个受试者将在同一天使用拟议的系统和行业标准的光条系统进行测试，以进行数据比较。需要一种低成本、准确、自动校准的刺激和记录系统，以满足新的ANSI标准。该设备应可运输用于床边试验。该产品将为所有有兴趣识别感觉和脑部疾病患者的领域的临床医生提供准确的信息。

DESCRIPTION (provided by applicant): Oculomotor testing is used worldwide for diagnostic screening of balance and other neurological disorders. Test parameters were not standardized until recently when a new US standard was implemented. ANSI standard S3.45-1999 defines procedures for performing and reporting a battery of tests for the evaluation of human oculomotor function. We propose to develop a portable, calibrated, low-cost device as a stimulus and recording system for oculomotor testing that meets the new standard. The target stimulus will be a laser diode spot whose projected position is commanded by a microcontroller. Beam scanning and positioning capabilities will provide stimuli for horizontal and vertical saccadic, pursuit and gaze oculomotor tests. Eye movement DC electro-oculographic recording will be provided by a high quality, mixed analog-digital circuit. The system will be interfaced with a notebook PC computer for portability. A graphical user interface on the PC will be provided for testing, analysis and data storage. Ten normal subjects will be tested with the device while performing oculomotor tests for saccadic, gaze holding and sinusoidal tracking with parameters required by the new standard. Each subject will be tested on the same day with both the proposed system and an industry-standard light bar system for data comparison. There is a need for a low cost, accurate, automatically calibrated stimulation and recording system that satisfies the new ANSI standard. This device should be transportable for use in bedside testing. This product will provide accurate information for clinicians in all areas interested in identifying patients with sensory and brain disorders.