Usability testing of a smartphone-based retinal camera among first-time users in the primary care setting.
Usability testing of a smartphone-based retinal camera among first-time users in the primary care setting.
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DOI：
10.1136/bmjinnov-2018-000321
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发表时间：
2019-10-01
期刊：
影响因子：
2
通讯作者：
Kim, Tyson N
中科院分区：
文献类型：
--
作者：
Li, Patrick;Paulus, Yannis M;Kim, Tyson N
基于智能手机的视网膜摄影是一种很有前途的方法，可以提高初级保健和社区环境中视网膜筛查的可及性。最近的工作集中在验证其在糖尿病视网膜病变检测中的用途。然而，视网膜成像在技术上可能具有挑战性，并且需要额外的工作来提高初级保健环境中视网膜成像的便利性。因此，我们在从未进行过视网膜成像的初级保健医疗助理中对基于智能手机的视网膜摄像头RetinaScope进行了可用性测试。共有24名医疗助理在总共五轮测试中进行了首次成像，并根据结果在测试轮之间对设备进行了迭代改进。对于首次使用者，获取模型眼后极的单个~50度图像的时间从283 ± 60秒减少到34 ± 17秒（p < 0.01）。对于首次使用者，获取5个视网膜重叠图像的时间从325 ± 60秒减少到118 ± 26秒（p = 0.02）。在人眼中的测试表明，可以在65 ± 7秒内捕获单个宽视图视网膜图像，并且在229 ± 114秒内捕获5个重叠图像。用户报告在整个轮次中的系统可用性评分较高，为86 ± 13，反映了首次操作器械时的高舒适度。我们的研究表明，基于智能手机的视网膜摄影有可能在初级保健环境中的医疗助理中迅速采用。
Smartphone-based retinal photography is a promising method for increasing accessibility of retinal screening in the primary care and community settings. Recent work has focused on validating its use in detection of diabetic retinopathy. However, retinal imaging can be technically challenging and additional work is needed to improve ease of retinal imaging in the primary care setting. We therefore performed usability testing of a smartphone-based retinal camera, RetinaScope, among medical assistants in primary care who had never performed retinal imaging. A total of 24 medical assistants performed first-time imaging in a total of five rounds of testing, and iterative improvements to the device were made between test rounds based on the results. The time to acquire a single ~50 degree image of the posterior pole of a model eye decreased from 283 ± 60 seconds to 34 ± 17 seconds (p < 0.01) for first-time users. The time to acquire 5 overlapping images of the retina decreased from 325 ± 60 seconds to 118 ± 26 seconds (p = 0.02) for first-time users. Testing in the human eye demonstrated that a single wide-view retinal image could be captured in 65 ± 7 seconds and 5 overlapping images in 229 ± 114 seconds. Users reported high Systems Usability Scores of 86 ± 13 throughout the rounds, reflecting a high level of comfort in first-time operation of the device. Our study demonstrates that smartphone-based retinal photography has the potential to be quickly adopted among medical assistants in the primary care setting.