Contrast Sensitivity Chart
VSRC's patented Functional Acuity Contrast Test (FACT) Chart is an accurate
and comprehensive sine-wave grating chart that tests functional visual
acuity. Developed by Dr. Arthur Ginsburg, the FACT sine-wave grating
chart tests five spatial frequencies (sizes) and nine levels of contrast.
The patient determines the last grating seen for each row (A, B, C,
D and E) and reports the orientation of the grating: right, up or left.
The last correct grating seen for each spatial frequency is plotted
on a contrast sensitivity curve.
FACT contrast sensitivity
scores can also be used to generate images with VSRC's EyeView
Functional Analysis Software which demonstrates how the world looks
to your patient based on their contrast sensitivity scores.
FACT Contrast Sensitivity
Charts are available in two sizes:
- Distance FACT
Includes framed wall chart, answer key, recording forms and instruction
manual. 27" X 37"
- Near FACT Chart
Includes a calibrated holder, answer key, recording forms and instruction
7" X 5"
To order your
FACT Contrast Sensitivity Charts, contact Stereo Optical Company.
Please visit www.stereooptical.com for more information about the FACT chart and all the products manufactured
by Stereo Optical Company
VSRC US Patent Numbers:
5,500,699, 5,414,479; FACT is a trademark of Stereo Optical Corporation.