St. Thomas the Apostle is an intercessor for persons with visual impairments (up to and including blindness). He was one of the Twelve disciples who were commissioned as Apostles and witnesses of the glorious Resurrection of the Lord Jesus Christ. He is known for his scepticism in regard to the word of the other apostles who had seen the Lord risen and alive. He wanted the most tangible proof- touching Christ’s wounds in His hands and side- before he would believe. And the Lord appeared before him, allowing him to do this. He carried the Gospel to India, where he was martyred for his beloved Lord in 72 A.D.
He is commemorated in the Orthodox Church on October 6.