PDF(Pubmed)
Abstract：
The purpose of this study was to develop a new pediatric acuity chart that can assess the minimum separation threshold by incorporating the minimum separation threshold into the picture. To overcome the design limitations of the Landolt ring, two designs of highly versatile minimum separable thresholds that can be easily incorporated into a picture were created: a black, filled circle (the \"Circle\") and a segment (the \"Square\"), both with the same break as in the Landolt ring. The three designs-the Landolt ring, Circle, and Square-were used to evaluate and compare the differences in the visual acuity of 21 healthy adults. No significant differences were observed between the results of the visual acuity tested with the Landolt ring, Circle, and Square (Landolt ring vs. Circle: p = 0.92, Landolt ring vs. Square: p = 0.31, Circle vs. Square: p = 0.40). The Bland-Altman analysis revealed no fixed errors between the Landolt ring and Circle and between the Landolt ring and Square (95% CI: -0.09-0.08, -0.09-0.12). Proportional errors were also not observed (p = 0.68, p = 0.41). The Landolt ring, Circle, and Square designs obtained equal results in visual acuity, thus achieving the successful development of a novel pediatric visual acuity chart using these designs.
摘要：
这项研究的目的是开发一种新的儿科敏锐度图表，该图表可以通过将最小分离阈值合并到图片中来评估最小分离阈值。为了克服Landolt环的设计局限性，创建了两种可以轻松合并到图片中的高度通用的最小可分离阈值的设计：黑色，填充圆（“圆”）和线段（“正方形”），两者都与Landolt环中的间隔相同。三种设计——兰多特戒指，Circle,和Square-用于评估和比较21名健康成年人的视力差异。用Landolt环测试的视力结果之间没有观察到显着差异，Circle,和广场（Landolt环与圆：p=0.92，Landolt环与平方：p=0.31，圆与平方：p=0.40）。Bland-Altman分析显示，Landolt环和Circle之间以及Landolt环和Square之间没有固定误差（95％CI：-0.09-0.08，-0.09-0.12）。也未观察到比例误差(p=0.68,p=0.41)。Landolt戒指,Circle,和方形设计在视力方面获得了相同的结果，从而实现了使用这些设计的新型儿科视力图的成功开发。
