Salmerón-Campillo Rosa María, Jaskulski Mateusz, Lara-Cánovas Sergio, González-Méijome José Manuel, López-Gil Norberto
Grupo de Ciencias de La Visión (CiViUM), Facultad de Óptica y Optometría, Universidad de Murcia, Murcia, Spain.
Clinical Optics Research Lab (CORL), Indiana University School of Optometry, Bloomington, IN, USA.
J Ophthalmol. 2019 Jun 11;2019:1946073. doi: 10.1155/2019/1946073. eCollection 2019.
Specially developed software (app) was written for handheld electronic devices that uses the device camera and light detector for real-time monitoring of near-work distance and environmental lighting. A pilot study of this novel app employed children using tablet computers in a classroom. Measurements of face-device distance and face illuminance were obtained from two schools where tablets were used regularly. Children were divided randomly into a control group (CG) and intervention group (IG). The app was calibrated in a lab and configured to store average values every 20 seconds in a remote database. In both groups, the app recorded data only when a child's face was present in the camera image. The app darkened the screen for the IG when the face-device distance was shorter than 40 cm. The total mean face-device distance was 36.8 ± 5.7 cm in CG and 47.2 ± 6.5 cm in IG. Children in IG had to accommodate approximately 0.6 D less when using their devices. The mean classroom face illuminance was 980 ± 350 lux in School #1 and 750 ± 400 lux in School #2. The novel method of remotely monitoring and controlling the face-device distance and illuminance can potentially open new paths for myopia prevention and myopia control.
专门为手持电子设备开发了软件（应用程序），该软件利用设备摄像头和光探测器实时监测近距离工作距离和环境光照。一项针对这款新型应用程序的试点研究让孩子们在教室里使用平板电脑。从两所经常使用平板电脑的学校获取了面部与设备距离及面部照度的测量数据。孩子们被随机分为对照组（CG）和干预组（IG）。该应用程序在实验室进行了校准，并配置为每20秒在远程数据库中存储平均值。在两组中，该应用程序仅在摄像头图像中出现孩子面部时记录数据。当面部与设备距离短于40厘米时，该应用程序会使干预组的屏幕变暗。对照组的面部与设备总平均距离为36.8±5.7厘米，干预组为47.2±6.5厘米。干预组的孩子在使用设备时所需的调节量约少0.6屈光度。在第一所学校，教室面部平均照度为980±350勒克斯，在第二所学校为750±400勒克斯。这种远程监测和控制面部与设备距离及照度的新方法可能为近视预防和近视控制开辟新途径。
