Sept 29 (Reuters) - Shares of Warby Parker Inc jumped 35% in their U.S. market debut on Wednesday, notching up a valuation of over $6 billion for the eyewear company. The company’s stock, which went public through a direct listing, opened at $54.05 per share compared with the reference price of $40 per share. (Reporting by Niket Nishant in Bengaluru; Editing by Krishna Chandra Eluri) Our Standards: The Thomson Reuters Trust Principles.