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The Worldwide Leader in Standardized Vision Testing

Low Vision Tests – CSV-1000

Contrast sensitivity provides the best method to evaluate the true visual capability of patients with poor vision. Virtually every low vision practitioner recognizes the problem of using visual acuity to measure the real-world visual capability of low vision patients. It is not uncommon for patients with the same level of standard acuity to have significantly different real-world visual capability and mobility. VectorVision offers a range of contrast sensitivity and letter contrast sensitivity tests that provide accurate and standardized evaluation for low vision patients.

 

CSV- l000LV

CSV-1000LV
Recommended test distance is 1 meter for these tests

The CSV-l000LV is designed for evaluating patients who have worse than 20/70 acuity. At a test distance of 1 Meter, the letter size is equivalent to 20/630 ETDRS LogMAR acuity. This test presents letters at 8 contrast levels.

The unique design of the CSV-l000LV matches the visual capability of low vision patients and provides for a more sensitive and reliable test.

The CSV-l000LV improves the office efficiency for evaluating low vision patients. The test is very fast because of the specific contrast levels chosen for the test and because row isolation eliminates the fixation problems encountered with other tests.

No special lighting or lighting calibration is required for the examination. Further, when needed, the test can easily be moved closer to the patient without adjusting the lighting.

The CSV-1000LV can also be used to test patients who have good acuity (better than 20/70). For these patients, the test distance should be 3 meters.

 

CSV-1000-1.5cpd Sine Wave Low Vision Test

CSV-1000-1.5cpd Sine Wave Low Vision Test

The CSV-1000-1.5cpd is a special test face designed for low vision evaluation by testing one spatial frequency using a very large field size.

At the 8 foot test distance, the test presents gratings with a spatial frequency of 1.5 cycles/degree and at the 4 foot test distance the test presents a 0.75 cycles/degree grating.

 

ELCT (Evans Letter Contrast Test) For Use with the ESV-3000

VectorVision recently expanded the CSV-1000LV test to a new test that offers 16 contrast levels. This test, the ELCT, provides a substantial improvement over other letter contrast tests which are simply printed charts, such as Pelli Robson or the Mars Test, because the ELCT uses a LogMAR-related acuity letter and is tested in a standardized format. The ELCT is used for testing low vision patients in conjunction with the ESV-3000. The test is administered at 1 meter for low vision patients

Featured Product

CSV-2000

CSV-2000 The first and only all-in-one digital vision testing device that offers the full range of vision tests, along with STANDARDIZED contrast sensitivity, glare and visual acuity.

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AcQviz Auto-Calibration

Includes the patented AcQviz technology that automatically measures monitor luminance and adjusts testing to the recognized FDA vision testing luminance standard of 85 cd/m2.


  • Standardized to the testing light level recommended by the FDA and ANSI

  • Easy-to-use remote control allows rapid integration into patient flow

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Full Range of Vision Tests

Includes the full range of vision tests, including acuity, astigmatism, convergence, color, depth, etc. and the proprietary VectorVision contrast sensitivity and glare tests.


  • Standardized to the testing light level recommended by the FDA and ANSI

  • Easy-to-use remote control allows rapid integration into patient flow

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Scientifically Validated Contrast Sensitivity Testing

Uses the same contrast and spatial frequency range that is validated by more than 100 scientific papers and provides the only published population age-norms.


  • Standardized to the testing light level recommended by the FDA and ANSI

  • Easy-to-use remote control allows rapid integration into patient flow

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Rapid Testing

Remote control provides the ability to easily switch between tests. All tests are designed specifically for a computerized format, thus making testing fast and easy.


  • Standardized to the testing light level recommended by the FDA and ANSI

  • Easy-to-use remote control allows rapid integration into patient flow

Why VectorVision?


As treatments evolve, so must the testing technology

Over the last 20 years, VectorVision testing equipment has become the worldwide benchmark for standardized contrast sensitivity, glare and ETDRS acuity testing.

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