title: [Opacification of Hydroview intraocular lenses necessitating lens replacement].
abstract: OBJECTIVE
  We report the opacification of Hydroview intraocular lenes necessitating lens replacement.
  
  
  METHODS
  This study includes 9 eyes of 7 patients (4 eyes of 3 men and 5 eyes of 4 womens, 52-92 years old) who underwent lens replacement at our hospital. A clinicopathological study and speculation on the incidence of Hydroview opacification were carried over.
  
  
  RESULTS
  All patients had hypertension and 3 had diabetes mellitus. Four eyes of 3 cases and 2 eyes of 2 cases demonstrated diabetic retinopathy and pseudoexfoliaton syndrome, respectively. Four of 6 cases, who underwent bilateral lens implantation, showed unilateral opacification. The duration from lens implantation to exchange ranged from 17 to 38 months. Slit-lamp examination revealed generalized opacification with white granular deposits on the lens optic surface, but transparency inside the optic. Three explanted lenses were stained with 1% alizarin red, and were positive for calcium in all cases. The remaining 6 lenses were analyzed with scanning electron microscopy, and showed electrondense granular deposits of 1 to 4 microm diameter. It is theorized that the incidence of Hydroview opacification and necessity of replacement were more than 3.8% and 3.6%, respectively, from the data at one hospital.
  
  
  CONCLUSIONS
  Calcium deposition on Hydroview might occur in more than 3.8% of cases.
authors.affiliation: Department of Ophthalmology, Kyorin University School of Medicine, Mitaka, Japan.
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Nagamoto
authors.forename: Etsuko
authors.initials: E
authors.lastname: Kawamata
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002114:Calcinosis / Q000209:etiology / Q000601:surgery*; D020878:Device Removal; D048909:Diabetes Complications / Q000150:complications; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D011475:Prosthesis Failure; D014786:Vision Disorders / Q000209:etiology / Q000601:surgery*