Contrast Sensitivity Tests

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Holladay Automated Contrast Sensitivity System&trade; (HACSS)
  • Features:
    • Testing for CSF Under Glare Conditions at low, medium or high luminance levels. Can be performed at either mesopic or photopic luminance levels
    • Preferred Optotypes; Rotationally symmetric targets and randomly presented optotypes. Eliminates biases from the patient with non-rotational symmetric optical aberrations such as residual astigmatism, trefoil, coma, etc.
    • ANSI & ISO Guideline Conformance; Conducts contrast sensitivity testing at (1.5, 3, 6, 12 and 18) cycles per degree and at light levels of 85 cd/m2 (photopic) and 3 cd/m2 (mesopic). Plus, includes all of the options and parameters the agencies require for contrast testing
    • Conduct Standard Vision Testing; Integrate with the M&S Smart System comprehensive visual acuity, contrast sensitivity, fixation and video display systems. Approved for clinical trials using the eETDRS and ATS protocols for visual acuity
    • Quick Test Feature that reduces test time on patient return visits by starting at 0.3 log units above previous threshold, minimizing test time to less than 3 minutes per eye
    • Automated-user interactive testing eliminates technician bias or erroneous data
    • Store multiple test results by patient to track changes in CSF function over time; results can be stored locally or transferred to any media storage device
    • Graph, compare and print patent results against normative data
    • Utilizes Smart System integrated database to store and transmit test results within minutes of test completion via internet connections
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Linear Sine Wave Grating with Normative Data
  • Features:
    • Utilize automated protocol that provides results with normative data or manually test patients using the M&S Remote Control or Keypad
    • Measure contrast at ANSI Standard 18, 12, 6, 3 and 1.5 Cycles/Degree from 100% to 0.8% contrast
    • Normative data study conducted in 2010 by Illinois College of Optometry
    • All targets are precisely sized according to the testing distance for maximum accuracy
    • Test in under 5 min
    • Perfect for monitoring progression of cataracts and assessing quality of vision
    • Display a graph comparing your patient’s results to normative data at the end of the testing algorithm
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