tear circulation device for oxygen permeability hard contact lens

摘要

PURPOSE: A tears circulation device of an oxygen permeable hard lens is provided, which smooths a tears circulation and also prevents the generation of a dry eye phenomenon or a stain reaction of a cornea. CONSTITUTION: According to the oxygen permeable hard lens constituting a dented part(2) on its center to collect and push tears of a contact lens wearer, a circulation sloped part(3) is formed on an outer part of an oxygen permeable contact lens(1) having the dented part on its center, and tears are circulated and exhausted smoothly by connecting the dented part and the circulation sloped part with a hole(4) having a sloped plane(5).