Fused bifocal contact lenses.
D000180:Acrylic Resins; D003261:Contact Lenses; D003315:Cornea / Q000033:anatomy & histology; D006801:Humans; D055095:Optics and Photonics; D011305:Presbyopia / Q000628:therapy*; D012029:Refraction, Ocular; D014792:Visual Acuity
D000180:Acrylic Resins