title: [Contrast sensitivity and stereopsis in pseudophakic patients with multifocal intraocular lens].
abstract: OBJECTIVE
  To evaluate the contrast sensitivity and stereopsis tests in patients who underwent bilateral implantation of multifocal intraocular lens.
  
  
  METHODS
  Tests of contrast sensitivity using the Pelli-Robson chart and stereopsis evaluation with the Titmus Stereo Test were performed in 20 patients 30-60 days after the bilateral implantation of Acrysof Restor multifocal intraocular lens.
  
  
  RESULTS
  The binocular contrast sensitivity test demonstrated that 6 patients (30%) presented 1.80 log units, 13 (65%) 1.65 and in only 1 (5%) the sensitivity was 1.50 log units. By the other hand, the monocular test in right eye showed 17 patients (85%) with 1.65 log units and 3 (15%) with 1.50. In the left eye, the test presented 16 patients (80%) with 1.65 log units and 4 (20%) with 1.50 log units. The average and the standard deviation of the contrast sensitivity were 1.63 (+/-0.05) for right eye, 1.62 (+/-0.06) for left eye and 1.69 (+/-0.08) for binocular test. Stereopsis test disclosed 12 patients (60%) presenting 40", 6 (30%) 50" and only 2 (10%) 60" (average: 45" and standard deviation: 6.88").
  
  
  CONCLUSIONS
  The Acrysof Restor intraocular lens provided results of contrast sensitivity and stereopsis in accordance with the criteria of normality established previously in other studies for phakic and pseudophakic patients. Therefore, this intraocular lens does not decrease visual functionality.
authors.affiliation: Departamento de Oftalmologia, Universidade Federal de São Paulo, São Paulo, SP. filipe@oftalmo.epm.br
authors.forename: Filipe de
authors.initials: Fd
authors.lastname: Oliveira
authors.forename: Cristina
authors.initials: C
authors.lastname: Muccioli
authors.forename: Luci Meire Pereira da
authors.initials: LM
authors.lastname: Silva
authors.forename: Eduardo Sone
authors.initials: ES
authors.lastname: Soriano
authors.forename: Carlos Eduardo Borges
authors.initials: CE
authors.lastname: Souza
authors.forename: Rubens
authors.initials: R
authors.lastname: Belfort
mesh_terms: D000368:Aged; D002387:Cataract Extraction; D015350:Contrast Sensitivity / Q000502:physiology*; D003867:Depth Perception / Q000502:physiology*; D005500:Follow-Up Studies; D006801:Humans; D019654:Lens Implantation, Intraocular; D008875:Middle Aged; D011446:Prospective Studies; D019591:Pseudophakia / Q000503:physiopathology*