title: [Blue-on-yellow perimetry in tobacco and alcohol consumers].
abstract: OBJECTIVE
  To evaluate the visual field changes in blue-on-yellow perimetry (B/Y) strategy 10-2 in alcohol and tobacco smoking consumers.
  
  
  METHODS
  Forty-two eyes of twenty-one users were studied. Fifteen individuals were used as a control group. All volunteers were males. After normal ophthalmologic examinations, central 10-2 (B/Y) was performed in both eyes. Analysis of the results was performed through the alterations in the depth graph defect and number of altered points.
  
  
  RESULTS
  It was found that the majority of the chronic alcohol and tobacco smoking consumers had a greater frequency of alterations in the depth graph defect; 40 eyes (95.3%), (> 10 dB), and 27 eyes (64.3%) showed a number of altered points, (> 10 points), (p < 0.0001). All those who were used as a control group showed alterations in the depth graph defect and number of altered points, but had less than 10dB and 10 altered points, respectively.
  
  
  CONCLUSIONS
  A higher number of abnormal points and depth graph defects and number of altered points were observed in alcohol and tobacco smoking consumers reflecting a higher number of alterations in the cells of the parvocellular system, responsible for color function, by B/Y perimetry.
authors.affiliation: Oftalmologia da Fundação Altino Ventura, Recife, PE, Brasil.
authors.forename: José Fernando Júnior
authors.initials: JF
authors.lastname: de Carvalho
authors.forename: Diana
authors.initials: D
authors.lastname: Danda
authors.forename: Hellmann
authors.initials: H
authors.lastname: Dantas
authors.forename: Tatiana Azevedo
authors.initials: TA
authors.lastname: Arraes
authors.forename: Elani
authors.initials: E
authors.lastname: Cavalcanti
mesh_terms: D000328:Adult; D017677:Age Distribution; D000437:Alcoholism / Q000150:complications*; D016022:Case-Control Studies; D016009:Chi-Square Distribution; D003117:Color Vision Defects / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D017678:Sex Distribution; D012907:Smoking / Q000009:adverse effects*; D058609:Visual Field Tests / Q000379:methods* / Q000592:standards; D014794:Visual Fields / Q000502:physiology*