Pupil response to light stimulation is a basic clinical approach to the assessment of a patient with visual loss. Asymmetric response may indicate a relative afferent pupillary defect (RAPD). The rapid detection device for relative afferent pupillary defect (present device) is a newly designed portable facility with computerized software on a mobile device. This allows for field ophthalmic examination and identification of RAPDs quickly and accurately and also record pupillary movements for further processing and analysis or send the information and images via Wi-Fi. We aimed at comparing and evaluating this device with available methods to develop a test which is practically easy and quick with objective results and no need for specialist interpretation, so that any technician can perform the test automatically. Distinctive software allows simple use of the device by field personnel with minimal training. Each patient was investigated by swinging flashlight method and the newly constructed automated O-glass. The swinging flashlight test procedure, also called as Marcus Gunn Test, is well known in ophthalmology science.The hardware for this device includes 4 different parts: Camera and optics, light control system, power control system, and the microcontroller.The two main components of the software are the ability to communicate with the hardware wirelessly, and the pattern recognition system.
