title: Capsulorhexis phimosis in retinitis pigmentosa despite capsular tension ring implantation.
abstract: A 56-year-old man with retinitis pigmentosa presented with dense nuclear sclerosis and scattered zonular loss with laxity confirmed by ultrasound biomicroscopy. He had extracapsular cataract extraction with a 6.0 mm continuous curvilinear capsulorhexis and implantation of a capsular tension ring (CTR) and a single-piece poly(methyl methacrylate) (PMMA) intraocular lens (IOL) in the capsular bag in his left eye. Severe anterior capsule fibrosis and contracture of the capsulorhexis opening with nasal decentration of the IOL were noted 4 months after surgery. A neodymium:YAG (Nd:YAG) laser anterior capsulotomy was performed to prevent further zonular stress and IOL decentration. The centripetal forces of capsular fibrosis after cataract surgery may exceed the centrifugal resistance of the standard CTR and PMMA IOL in patients with retinitis pigmentosa. Such patients must be carefully monitored postoperatively. An Nd:YAG laser anterior capsulotomy is a safe and effective option to manage anterior capsule fibrosis.
authors.affiliation: Sankara Nethralaya, Chennai, Tamil Nadu, India.
authors.forename: R R
authors.initials: RR
authors.lastname: Sudhir
authors.forename: S K
authors.initials: SK
authors.lastname: Rao
mesh_terms: D019923:Capsulorhexis; D002386:Cataract / Q000150:complications*; D002387:Cataract Extraction; D005355:Fibrosis; D006801:Humans; D053685:Laser Therapy; D007903:Lens Capsule, Crystalline / Q000473:pathology* / Q000601:surgery; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D019904:Polymethyl Methacrylate; D011183:Postoperative Complications / Q000601:surgery; D019736:Prostheses and Implants; D019919:Prosthesis Implantation; D012174:Retinitis Pigmentosa / Q000150:complications*
chemical_list: D019904:Polymethyl Methacrylate