The Arclight is a novel ophthalmoscope-otoscope or diagnostic set from St Andrews Medical Innovations, who are a wholly owned subsidiary of the University of St Andrews. The Arclight is small and compact unlike traditional ophthalmoscopes, meaning it is truly portable, without loss of functionality. It is cost-effective yet is also sold to high income countries at a higher price meaning we can sell it at a subsidised price in low-resource settings.