Spectacles with adjustable interpupilary distance

摘要

A pair of spectacles has lens 30, including a hole 35 extending therethrough, a lens supporting member 10, defining a slit 13, configured to extend laterally across the front of a user's head, a first fastener 41, configured to extend through the slit, including a bore, and a second fastener 45, for insertion into the first fastener's bore. The first and second fasteners are configured to extend through the hole and the first fastener is configured for frictional engagement with the slit on insertion of the second fastener into the first fastener's bore. When the first fastener is passed through the slit it can be moved relative to the lens supporting member to register with a users interpupilary distance. The invention is suitable for use in developing countries where donated lenses can be adjusted for different users.