Nifty, portable exam tool worth a look
IT IS one of a number of similar apps available, however this stands apart as it is free (currently) and easy to use.
EyeMD provides five functions. Firstly the ability to measure pupil size utilising the camera on your phone, a Snellen eye chart to measure visual acuity, a pen light tool, an Ishihara colour test as well as a reference section that outlines the anatomy of the eye.
While generally GPs have access to equipment that performs all of these functions in the office, I found the ability to easily measure pupil size