Perimeter for visual field assessment in healthy elderly research participants

健康老年人研究参与者视野评估的周界

• 批准号: 360167-2008
• 负责人: Wilkinson, Frances
• 金额: $ 2.41万
• 依托单位: York University
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=363863
• 关键词: Perimeter; visual; field; assessment; healthy

Perimetry is the assessment of visual sensitivity in discrete local regions of the visual field, yielding a sensitivity contour map of all or part of the retina.  Modern perimetry allow assessment with stationary or with moving targets and includes specialized tests with flickering and with coloured stimuli. Short wave length automated perimetry (SWAP), which assesses the integrity of the blue-yellow system, is a particularly sensitive indicator of visual field change in a range of conditions, including changes related to aging.  This request is for the purchase of a Humphrey Field Analyzer, or equivalent instrument, to allow me to screen participants in studies of vision and aging.  The particular questions addressed by my research involve the capacity to pool information across extended regions of the visual field.  Therefore it is important to be able to independently assess the integrity of local retinal areas in order to be certain that any changes in global processing that appear to occur with age do not simply reflect regions of local reduced sensitivity.      As no such facility exists on or near the York campus, this equipment will greatly enhance my own research program and will provide a valuable resource for other vision scientists at York, especially those with a research interest in aging.  In viewing of the current rapid growth in the number of elderly Canadians, understanding which visual abilities remain intact and which show some decline in normal aging is critical.  This will allow us to create and maintain supportive environments for healthy aging, optimizing visual cues to reduce risks such as falls.

视野检查是在视野的离散局部区域中评估视觉敏感度，产生全部或部分视网膜的敏感度等高线图。现代视野检查允许对静止或移动目标进行评估，并包括闪烁和彩色刺激的专门测试。短波长自动视野检查（SWAP）用于评估蓝黄系统的完整性，是一种在一系列条件下（包括与老化相关的变化）视野变化的特别敏感的指标。此请求用于购买Humphrey视野分析仪或等效仪器，我的研究所解决的特殊问题涉及到在视觉和衰老的扩展区域中汇集信息的能力，因此，重要的是能够独立地评估局部视网膜区域的完整性，以便确定似乎随着年龄发生的全局处理的任何变化不会简单地反映局部灵敏度降低的区域。 由于约克校区内或附近没有这样的设施，这台设备将大大加强我自己的研究计划，并将为约克的其他视觉科学家提供宝贵的资源，特别是那些对衰老有研究兴趣的人。鉴于目前加拿大老年人数量的快速增长，了解哪些视觉能力在正常衰老过程中保持完整，哪些视觉能力出现一定程度的下降至关重要。这将使我们能够创造和维持健康衰老的支持性环境，优化视觉提示以降低风险，例如福尔斯。