title: Optical features of the ocular surface.
mesh_terms: D000293:Adolescent; D000328:Adult; D001251:Astigmatism / Q000209:etiology; D003315:Cornea / Q000473:pathology / Q000502:physiology* / Q000601:surgery; D003316:Corneal Diseases / Q000209:etiology / Q000473:pathology / Q000503:physiopathology*; D006801:Humans; D007634:Keratitis / Q000209:etiology; D007834:Lasers / Q000009:adverse effects; D008875:Middle Aged; D055095:Optics and Photonics; D011183:Postoperative Complications; D011625:Pterygium / Q000209:etiology; D014466:Ultraviolet Rays / Q000009:adverse effects; D014785:Vision, Ocular / Q000502:physiology*