Graham Field Official Ishihara Color Blindness Test – Options 38 Plate

Features

• For congenital & red/green color blindness
• Color plates encased in album-type books
• 10, 14, 24 & 38 plate options
• Instructions included

Product Details

• Product Dimensions: 8.07 x 6.07 x 1.37 inches; 1 pounds
• Shipping Weight: 1 pounds
• ASIN: B000FLTQ04
• Item model number: 1256
• Average Customer Review: Customer Reviews

Product Description

Color Blindness Test Official Ishihara Color Blindness Test The Official Ishihara Color Blindness Test developed for color vision testing. Unlike the Ishihara patterns that may be found online and viewed over a computer monitor, this color vision test is designed to produce accurate test results in determining color blindness and the degree of color blindness. Since color reproduction may vary from computer monitor-to-computer monitor, the best and most accurate method of testing for color blindness still comes from official Ishihara album-type books. Unless the computer monitor display administering the test is capable of CRT ICC calibration and regularly degaussed and recalibrated, accurate color and test results may not be possible. Additionally, home printed versions of the test may yield inaccurate results due to variation in ink cartridge color. Printing of Ishihara color tests should only be done on imaging devices accurately calibrated to CMYK or Pantone color charts. The Official Ishihara Color Blindness Test is accepted by leading authorities as a simple and accurate method for discovering congenital color blindness and red-green blindness in both complete and incomplete forms. Also known as Protanomaly and Deuteranomaly, "red-weakness" and "green-weakness", respectively, are the two most common types of color deficiency. It is said that 1 out of 100 males are subject to "red-weakness" and approximately 5 out of 100 males are subject to "green-weakness". In a test, those suffering from red-weakness fail to see the color red with the same power ( saturation or depth of color ) as a normal observer. It is said that Males, in general, experience color blindness at the rate of 12 in 100 while color blind females reportedly test at a rate of 1 in 200. With this color blindness test, you will be able to test for not only Protanomaly and Deuteranomaly, but Dichromasy, Protanopia and Deuteranopia. Testing for color blindness is important. The responsibility of a