title: Beyond 20/20: new clinical methods to quantify vision performance.
abstract: OBJECTIVE
  To describe the design, the sensitivity, and the application of new methods to quantify visual performance.
  
  
  METHODS
  The super vision test-night vision goggle (SVT-NVG) is a new clinical letter chart that measures high- and low-contrast vision under daytime and simulated night conditions. The cone contrast test (CCT) is a computer-based color test that readily diagnoses type and severity of color deficiency.
  
  
  RESULTS
  The SVT-NVG reveals subtle decrements from normal not detected by standard visual acuity. The CCT shows 100% sensitivity for the detection of hereditary red or green color deficiency and reveals acquired deficiency as an early sign of disease.
  
  
  CONCLUSIONS
  The SVT-NVG and CCT provide rapid, sensitive indices of color and spatial vision potentially linkable to real-world operational demands.
authors: Aerospace Ophthalmology Branch, USAF School of Aerospace Medicine, 2513 Kennedy Circle, Brooks City-Base, TX 78235-5116, USA.
authors: Jeff
authors: J
authors: Rabin
authors: John
authors: J
authors: Gooch
authors: Douglas
authors: D
authors: Ivan
authors: Richard
authors: R
authors: Harvey
authors: Michelle
authors: M
authors: Aaron
mesh_terms: D006801:Humans; D008887:Military Medicine; D055254:Night Vision; D012016:Reference Values; D012680:Sensitivity and Specificity; D015351:Vision Screening / Q000379:methods*