An Alberta man was found guilty Monday of aggravated assault for a brutal attack on a gay and legally blind man who'd made a sexual advance on his attacker in McBride, B.C. B.C. Supreme Court Justice Frits Verhoeven said Allan Richter, 33, of Ponoka, Alta., used a degree of force "far beyond that which could reasonably or even conceivably be considered necessary in the circumstances,'' when he attacked William Floris Groeneveld, 56. During a trial, the court heard that Groeneveld made a sexual advance towards Richter on Dec. 11, 2011 when he touched his buttocks and his genitals minutes after Richter's SUV got stuck in the snow while giving Groeneveld a ride home. Richter punched Groeneveld three times in his face leaving him with a broken jaw, multiple lacerations and severe swelling to his head. He was in hospital for nine days and he continues to suffer problems with his balance, his memory as well as his jaw as a result. Groeneveld, who suffers from an inherited progressive eye disease and has been effectively blind for many years, testified he had lost his way home after leaving a pub and returned to the building where he asked Richter for a ride, which ended with Richter's SUV going off the road.