Standardized Contrast Sensitivity

Test your patient’s contrast sensitivity accurately achieving standardized outcomes with built-in screen luminance calibrator. Automated test strategies, simplify administration. Test contrast under different lighting conditions with patient real time luminance reader, and have all results plotted onto a graphical report for easy comparison.

The software uses datacolor’s spyder calibration device to calibrate your monitor to 85cd/m2.   This insures that your results for a patient from visit to visit are the same, even if the tests are conducted in a different exam room, at different seasonal temperatures, and even different times of the day.

The general approach is to start with the quicker method of testing with letters, and if a deficiency is found with this test, then a more comprehensive test is performed with sine-gratings (spatial frequency).

The test starts by first estimating thresholds with large jumps in contrast levels, and then proceeds to a precision refinement with small increments.   This prevents doctor and patient fatigue, as this test can take time to complete.

Since the sine-gratings test can be complicated to administer, as the lower levels of contrast may even be hard for the doctor to determine, Chart2020® has built a mini repeater screen with a private iconic-answer mode for the doctors convenience to mark the patients’ responses.

A report sample is shown below which includes a graphical and tabulated report, and has a customizable age based overlay for normative comparisons.

The test is also suitable to be used in

  • Pre-testing exam rooms
  • Clinical trial studies
  • Ophthalmic hospital units
  • Self-service vision booths
Watch Demo

Reports Sample

Standardized Outcomes – Luminance Calibration

  • Calibration Hardware To Set Monitor To 85cd/m2
  • Immediate Alternate Test Distance Option
  • Suitable For Pre-Test Or Self Service Vision Booths
  • Detailed Graphical Pdf Reports
  • Test At 1.5, 3, 6, 12, 18 Cycles Per Degree
  • Test Each Eye Separately And Both
  • Real-Time USB Room-Luminance Hardware

Simple Interface – Complex Algorithms

  • Patient Presented With Target (Letter Or 1|2 Sine Gratings)
  • Simple Yes|No Answer Strategy
  • Dedicated Y|N Remote Buttons
  • iPad Answer Mode For Easy Administration
  • Doctor Repeater Monitor Answer Mode
  • Easy Pre-Testing By Technician

Simple Interface – Complex Algorithms

  • Patient Presented With Target (Letter Or 1|2 Sine Gratings)
  • Simple Yes|No Answer Strategy
  • Dedicated Y|N Remote Buttons
  • iPad Answer Mode For Easy Administration
  • Doctor Repeater Monitor Answer Mode
  • Easy Pre-Testing By Technician

Quick Screening – Precision Threshold

Quick Screening – Precision Threshold

  • Big Jumps To Estimate Threshold
  • Immediate Refinement Of Precision Threshold
  • Test All Cycles Or Only Some
  • Targets Randomized – No Two Tests Are The Same

Spatial-Frequency Modes

Pairs Mode

  • 2 Targets Displayed Side By Side
  • 1st Target Blank
  • 2nd Target Gratings At 180°, 90°, 35° Or 135°
  • Patient Selects Which Target Not Blank
  • Bias Removed –Tests Randomized
  • Patient Self Administered Option Using Left Right On Remote
  • Reduce Staff Overhead

Single Mode

  • 1 Targets Displayed
  • Grating Displayed At 180°, 90°, 35° Or 135°
  • Patient Indicates Angle Of Gratings
  • This Mode Cannot Be Patient Adminstered

Pairs Mode

  • 2 Targets Displayed Side By Side
  • 1st Target Blank
  • 2nd Target Gratings At 180°, 90°, 35° Or 135°
  • Patient Selects Which Target Not Blank
  • Bias Removed –Tests Randomized
  • Patient Self Administered Option Using Left Right On Remote
  • Reduce Staff Overhead

Single Mode

  • 1 Targets Displayed
  • Grating Displayed At 180°, 90°, 35° Or 135°
  • Patient Indicates Angle Of Gratings
  • This Mode Cannot Be Patient Adminstered

Repeater Monitor

  • Doctor Answer View
  • Eases Test Administration
  • Available On Dual Monitor Setup Or Ipad Live View
  • Test Your Patient Not The Doctor
  • Answer Displayed As Left | Right For Pairs Mode
  • Answer Displayed As Angle Of Grating In Single Mode
  • Doctor Answer View
  • Eases Test Administration
  • Available On Dual Monitor Setup Or Ipad Live View
  • Test Your Patient Not The Doctor
  • Answer Displayed As Left | Right For Pairs Mode
  • Answer Displayed As Angle Of Grating In Single Mode

The Wait Is Finally Over

Chart2020’s contrast sensitivity test can be used to assess patients with glaucoma, macular degeneration, diabetes, cataracts, and amblyopia and to help evaluate the need for various treatments including LASIK, refractive surgeries, and IOLs. The test is used worldwide because of its ease of administration, accuracy, and detailed reports which doctors can use to motivate for surgery and refractive treatments.

The test is used worldwide because

  • ease of administration
  • accuracy
  • detailed reports to motivate for surgery and refractive surgery