Chacko Ruhel K, Chandrakanth Prithvi, Roy Aniket, Gosalia Hirika, Aggarwal Gargi, Narendran V
Department of General Ophthalmology, Aravind Eye Hospital and Post Graduate Institute of Ophthalmology, Coimbatore, Tamil Nadu, India.
Department of Vitreoretinal Services, Dr. Chandrakanth Nethralaya, Kozhikode, Kerala, India.
Indian J Ophthalmol. 2025 Mar 1;73(3):437-441. doi: 10.4103/IJO.IJO_859_24. Epub 2024 Dec 27.
The pupillary direct and consensual reflex is an important non-invasive quick assessment of the neurological state of the eye. Currently, there is no cheap and affordable recording tool for screening and documentation of a relative afferent pupillary defect. We describe how to construct a frugal, do-it-yourself handheld scotopic binocular pupillometer device called Pupilmate. Two simple Wi-Fi-enabled board cameras fitted on both sides of the back of a rectangular cardboard box separated by a central paper divider, one side of the rectangular box was left open. An infrared red (IR) light source in the form of light-emitting diodes (LEDs) was fitted around each of the cameras. Two white light LEDs were fitted on either side of the box controlled by a two-way switch. A simultaneous video stream of both pupils could then be tuned in on any chosen device using the internet. Each pupil is manually illuminated for a desired time allowing recording of direct as well as consensual reflexes, which are objectively observed. Pupil reaction was easily recorded and repeatable using Pupilmate. It served as a good medium for initial screening in an outpatient department (OPD) setting, outreach programs, clinics, etc.
瞳孔直接和间接对光反射是对眼部神经状态进行重要的非侵入性快速评估。目前，尚无用于筛查和记录相对传入性瞳孔障碍的廉价且经济实惠的记录工具。我们描述了如何构建一种名为Pupilmate的简易、自制的手持暗视双目瞳孔计设备。在一个长方形硬纸盒背面的两侧安装两个简单的带Wi-Fi功能的板载摄像头，中间用一张纸隔板隔开，长方形盒子的一侧保持开放。每个摄像头周围安装有发光二极管（LED）形式的红外（IR）光源。盒子两侧各安装两个白色LED，由一个双向开关控制。然后，可以使用互联网在任何选定的设备上同步调阅两个瞳孔的视频流。手动照亮每个瞳孔一段所需时间，以便记录直接和间接对光反射，这些反射可被客观观察到。使用Pupilmate可以轻松记录瞳孔反应且结果可重复。它是门诊部（OPD）环境、外展项目、诊所等进行初步筛查的良好工具。
