title: Contrast sensitivity basics and a critique of currently available tests.
abstract: The ability to distinguish contrast plays an important role in patients' everyday vision. Contrast sensitivity testing can identify many ocular diseases. Testing the peak of contrast sensitivity function provides a useful clinical adjunct to standard visual acuity assessments. This article reviews the basics of contrast sensitivity. It also describes the currently available contrast sensitivity tests and compares their reliability, advantages, and disadvantages.
  
  
  BACKGROUND
  Drs. Spaeth and Richman have developed and patented a contrast sensitivity test titled the Spaeth/Richman Contrast Sensitivity test. Dr. Wirostko has no financial or proprietary interest in any material or method mentioned.
authors.affiliation: Glaucoma Service, Wills Eye Institute, Jefferson Medical College, Philadelphia, Pennsylvania, USA. jesse_richman@yahoo.com
authors.forename: Jesse
authors.initials: J
authors.lastname: Richman
authors.forename: George L
authors.initials: GL
authors.lastname: Spaeth
authors.forename: Barbara
authors.initials: B
authors.lastname: Wirostko
mesh_terms: D055253:Color Vision / Q000502:physiology; D015350:Contrast Sensitivity / Q000502:physiology*; D005128:Eye Diseases / Q000175:diagnosis; D006801:Humans; D055255:Mesopic Vision / Q000502:physiology; D015203:Reproducibility of Results; D012684:Sensory Thresholds; D014787:Vision Tests / Q000379:methods*