title: Do daily wear opaquely tinted hydrogel soft contact lenses affect contrast sensitivity function at one meter?
abstract: OBJECTIVE
  To investigate the effects of daily wear opaquely tinted hydrogel soft contact lenses on contrast sensitivity functions, as measured using the Pelli-Robson chart viewed at 1 meter.
  
  
  METHODS
  Contrast sensitivity was measured in 48 healthy individuals before and 6 hours after soft contact lens wear. Twenty-four subjects used clear soft contact lenses and 24 used tinted soft contact lenses.
  
  
  RESULTS
  The contrast sensitivity scores were significantly decreased monocularly and binocularly (P = 0.000 and P = 0.002, respectively) in the colored contact lens group whereas there were no significant changes in the clear contact lens group (P = 0.317 and P = 0.317, respectively).
  
  
  CONCLUSIONS
  Color-tinted contact lenses were associated with a reduction of contrast sensitivity function. Therefore, those who wear colored contact lenses should be informed about the possible consequences of tinted contact lens wearing.
authors.affiliation: Department of Ophthalmology, Selcuk University, Konya, Turkey. akagnici@selcuk.edu.tr
authors.forename: Ahmet
authors.initials: A
authors.lastname: Ozkagnici
authors.forename: Nazmi
authors.initials: N
authors.lastname: Zengin
authors.forename: Omit
authors.initials: O
authors.lastname: Kamiş
authors.forename: Kemal
authors.initials: K
authors.lastname: Gündüz
mesh_terms: D000328:Adult; D003116:Color; D003263:Contact Lenses, Hydrophilic / Q000009:adverse effects*; D015350:Contrast Sensitivity; D005260:Female; D019466:Glare; D006801:Humans; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate / Q000009:adverse effects*; D008297:Male; D014786:Vision Disorders / Q000209:etiology* / Q000503:physiopathology; D014792:Visual Acuity
chemical_list: D020136:Hydrogel, Polyethylene Glycol Dimethacrylate