The 79-year-old former oil tycoon has been diagnosed with acute and chronic sinusitis, which will require surgery. - Reuters SINGAPORE (The Straits Times/ANN): Hin Leong Trading founder Lim Oon Kuin did not show up in State Courts on Thursday morning (April 29) to face 23 new charges of forgery-related offences as he had obtained a medical certificate stating he was unfit to attend court. As a result, Lim could not be tendered the new charges for a third time on account of his health issues. The 79-year-old former oil tycoon - better known as O.K. Lim - was deemed unfit to attend court by his doctor as he has been diagnosed with acute and chronic sinusitis, which will require surgery.