Stephen and Tess Souter from Braunton, Devon. Stephen lost eye sight in one eye due to rare eye eating parasite contracted through wearing disposable contact lenses. See SWNS story SWEYE; A man has been left blind in one eye from a rare infection – triggered by his contact lenses. Retired engineer Stephen Souter, 63, says he has suffered ‘indescribable’ pain from the disease which has slowly destroyed his cornea. The cornea – the clear ‘window’ at the front of the eye – is one of our most sensitive organs, with the highest density of pain receptors in the body. Stephen has been diagnosed with Acanthamoeba Keratitis, an infection caused by a microscopic organism found in water both outdoors and in our homes.