TearView is a camera developed from the latest military grade technology with a bespoke lens designed for eye clinics. It records natural infrared coming from the ocular surface. This means that no light needs to be shone onto the eye and in fact, it can be used in complete darkness. All substances naturally emit infrared, but different substances at the same temperature emit infrared to different degrees. This property allows for the first time the natural tear film of the eye to be seen as it spreads across the eye following a blink