Digital Reading with Low Vision: Principles for Selecting Display Size.
Digital Reading with Low Vision: Principles for Selecting Display Size.
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DOI：
10.1097/opx.0000000000001919
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发表时间：
2022-08-01
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数字阅读设备在低视力人群中变得越来越流行。由于显示器有许多尺寸，从智能手表到大型台式计算机显示器，因此重要的是要有原则来指导视力低下的人选择合适的显示器进行阅读。低视力人群选择有效的数字显示器进行阅读，主要关注印刷尺寸、显示器尺寸、字体、视力和阅读距离的相互影响。本技术报告旨在提供识别低视力人群流畅阅读所需的数字显示器最小尺寸的原则。我们强调两个关键因素，在选择一个适当的阅读显示：角度打印大小，这应该超过个人的临界打印大小，和显示大小，这应该允许至少13个字符被呈现在每一行。我们的方法考虑了低视力个体的敏锐度，以及对观看距离和字体的偏好。通过一个说明性的例子，我们演示了我们的方法可以用来确定显示器的大小为低视力的个人与20/200的敏锐度和中央领域的损失谁想要阅读在30厘米的观看距离与时代罗马字体。我们已经根据我们推荐的方法开发了一个Web应用程序，以提供对我们算法的轻松访问。我们提供了一个程序，以指导选择适当的显示器，为广泛的敏锐度。我们的方法可以帮助临床医生为他们的病人，数字产品设计师在开发更方便的设备，并在选择数字显示阅读低视力个人的建议。
Digital reading devices have become increasingly popular among people with low vision. Because displays come in many sizes ranging from smart watches to large desktop computer displays, it is important to have principles to guide people with low vision in selecting suitable displays for reading. The selection of effective digital displays for reading by people with low vision focuses attention on the interacting effects of print size, display size, font, visual acuity and reading distance. This technical report aims to provide principles for identifying the minimum size of digital displays required for fluent reading by people with low vision. We emphasize two critical factors in selecting an appropriate reading display: angular print size, which should exceed the individual’s critical print size, and display size, which should allow at least 13 characters to be presented on each line. Our approach considers a low-vision individual’s acuity, and preferences for viewing distance and fonts. Through an illustrative example we demonstrate how our approach can be used to determine display size for a low-vision individual with 20/200 acuity and central field loss who wants to read at 30 cm viewing distance with the Times Roman font. We have developed a web application based on our recommended approach to provide easy access to our algorithm. We provide a procedure to guide the selection of appropriate displays for a wide range of acuities. Our approach can help clinicians in making recommendations for their patients, digital product designers in developing more accessible devices, and low-vision individuals in selecting digital displays for reading.