Synthesising Wider Field Images from Narrow-Field Retinal Video Acquired Using a Low-Cost Direct Ophthalmoscope (Arclight) Attached to a Smartphone

Abstract

Access to low cost retinal imaging devices in low and middle income countries is limited, compromising progress in preventing needless blindness. The Arclight is a recently developed low-cost solar powered direct ophthalmoscope which can be attached to the camera of a smartphone to acquire retinal images and video. However, the acquired data is inherently limited by the optics of direct ophthalmoscopy, resulting in a narrow field of view with associated corneal reflections, limiting its usefulness. In this work we describe the first fully automatic method utilizing videos acquired using the Arclight attached to a mobile phone camera to create wider view, higher quality still images comparable with images obtained using much more expensive and bulky dedicated traditional retinal cameras.

Generative Image Inpainting for Retinal Images using Generative Adversarial Networks

“…High quality, wide field of view images can be captured using expensive, state-of-the-art ophthalmoscopes. In order to make fundus imaging more accessible, especially in countries with emerging economies, lower-cost alternatives such as the Arclight have been developed [2]. However, a limitation of many lower-cost alternatives is that they often only produce a narrow field of view.…”