Contrast Glaretester: CSV-1000 VS. CGT-1000

CSV-1OOOE

The CSV-1OOOE contrast sensitivity chart test face is the most widely used contrast sensitivity test in the world. This test provides for four (4) rows of sine-wave gratings. At the recommended test distance of 8 ft (2.5 meters), these gratings test the spatial frequencies of 3, 6, 12 and 18 cycles/degree. The CSV-1OOOE provides a full contrast sensitivity curve, which is very useful for the evaluation of ocular disease (particularly cataracts, glaucoma, optic neuritis, diabetes and macular degeneration), contact lenses and refractive surgery. For cataract evaluation/documentation, a functional acuity score can be obtained directly from the test scoring sheet.
For those interested in using the CSV-1OOOE in research studies, the test face is available in two versions. The CSV-1OOOE Contrast Sensitivity Chart 1 provides randomized locations for the grating targets.

CGT-1000
CGT-1000 is effectively available for diagnosis before and after the cataract surgery, observing the progress after the surgery of the corneal refractive power correction, relatively examining the contrast sensitivity and glare sensitivity for loss of the visual function.

CGT-1000 has four merits:

1. No need to read the operation manual repeatedly. Immediately you may be an expert operator.
2. Just press the start button. No complicated setting of the targets. The CGT 1000 will automatically perform examinations with presentation of 6 kinds of targets and 12 levels of the contrast thresholds. Buzzer will notice the completion of the examinations. (Refer to the operation procedure)
3. After finish, just press the print button. The examination results will be printed out through the built-in printer.
4. Less patient’s fatigue with short time of examination. Examination time is approximately 2 minutes per eye.
The CGT 1000 was produced by Takagi seiko co. LTD.