title: Extended-wear soft contact lenses for aphakic correction.
abstract: Evaluation of an extended-wear perfilcon A soft contact lens (Permalens) in 299 eyes of 244 patients showed that 266 eyes (89%) were successfully fitted and wore the lenses without important complications (mean follow-up, 23 months; range, four to 48 months). Use of the lens in 33 eyes was discontinued because of transient lens-related problems. "Overcorrected" acuity of 6/12 (20/40) or better (with spectacles plus the contact lens) was achieved in all patients who were without vitreous, retinal, or optic nerve disease. Seventy-six percent of patients could wear the lens for longer than one-month intervals, and 30% removed the lens at four- to six-month intervals. There were no cases of infectious corneal ulcers or scarring or permanent visual loss. Our more limited experience with lidofilcon B lenses (Sauflon PW) (24 eyes) and the silicone lenses (Silsoft) (25 eyes) also showed beneficial results.
mesh_terms: D000368:Aged; D001035:Aphakia / Q000628:therapy*; D001036:Aphakia, Postcataract / Q000628:therapy; D003263:Contact Lenses, Hydrophilic / Q000009:adverse effects; D005139:Eyeglasses; D005260:Female; D006801:Humans; D008297:Male; D008768:Methylmethacrylates / Q000627:therapeutic use; D011205:Povidone / Q000627:therapeutic use; D012828:Silicones; D013997:Time Factors; D014792:Visual Acuity
chemical_list: D008768:Methylmethacrylates; D012828:Silicones; C031148:perfilcon A; D011205:Povidone