Nicholas Kao Se Tseien

Nicholas Kao Se Tseien (January 15, 1897 – December 11, 2007) was a Chinese Catholic priest living in Hong Kong who was both the oldest Catholic priest in modern times and the oldest ever person to have had a cataract operation. In 2007, he celebrated his claimed 110th birthday, and, in doing so, he reached supercentenarian status. If his age had been verified he would have been, from October 13, 2007 until his death, the second-oldest man in Asia and the seventh-oldest man in the world. However, his age has never been verified by an independent international authority on longevity, such as the Gerontology Research Group.