Fig. 1. RetinaScope hardware.

a A series of optical lenses are used to focus light from the LED array on the retina (orange light). Reflecting off the retina, light passes through the wire grid beamsplitter and is focused on the smartphone’s camera sensor (blue arrow). b During image acquisition, patients focus a fixation dot on the magnetic display (grey arrow) to guide their gaze while a front element (blue arrow) acquires the image. c Technicians are capable of controlling the device via intuitive touch controls and an application running on the paired iPhone.