Wen Jing, Yang Bikun, Cui Jinshi, Wang Li, Li Xiaoqing
Department of Pediatric Ophthalmology, Peking University First Hospital, Peking University Children Vison Institute, Peking University.
School of Intelligence Science and Technology, Peking University.
J Vis Exp. 2023 Mar 17(193). doi: 10.3791/65274.
Visual acuity measurement is an important visual function test to perform in infancy and childhood. However, accurate visual acuity measurement in infants is difficult because of deficiencies in their communication ability. This paper presents a novel automated method to assess visual acuity in children (5-36 months old). This method, the automated acuity card procedure (AACP), uses a webcam for eye tracking and recognizes children's watching behaviors automatically. A two-choice preferential-looking test is performed when the tested child watches the visual stimuli shown on a high-resolution digital display screen. When the tested child watches the stimuli, their facial pictures are recorded by the webcam. These pictures are used by the set computer program to analyze their watching behavior. With this procedure, the child's eye movement responses to different stimuli are measured, and their visual acuity is assessed without communication. By comparing the results with grating acuity obtained by Teller Acuity Cards (TACs), AACP performance is deemed comparable to that of TACs.
视力测量是婴幼儿和儿童期一项重要的视觉功能测试。然而，由于婴儿沟通能力的不足，准确测量其视力具有一定难度。本文提出了一种评估儿童（5至36个月大）视力的新型自动化方法。该方法即自动视力卡程序（AACP），它使用网络摄像头进行眼动追踪，并能自动识别儿童的观看行为。当被测儿童观看高分辨率数字显示屏上显示的视觉刺激物时，会进行二选一的优先注视测试。当被测儿童观看刺激物时，网络摄像头会记录他们的面部图像。这些图像由设定的计算机程序用于分析他们的观看行为。通过这个程序，可以测量儿童对不同刺激的眼动反应，并且无需沟通就能评估他们的视力。通过将结果与泰勒视力卡（TACs）获得的光栅视力进行比较，AACP的性能被认为与TACs相当。
