Refurbished Tonopen XL
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Color Blind Test Ishihara
Color Blind Test Ishihara Test is a test for red-green color deficiencies.
It was named after its designer, Dr. Shinobu Ishihara, a professor at
the University of Tokyo, who first published his tests in 1917.
The Color Blind Test Ishihara consists of a number of
colored plates, each of which contains a circle made of many different
sized dots of slightly different colors, spread in a seemingly random
manner. Within the dot pattern, and differentiated only by color, is a
number. What, or even if, a number is visible indicates if and what form
of color blindness the viewer has.
The full Color Blind Test Ishihara consists of thirty-eight
plates, but the existence of a deficiency is usually clear after no more
than four plates.
Common plates include a circle of dots in shades of green
and light blues with a figure differentiated in shades of brown or a circle
of dots in shades of red, orange and yellow with a figure in shades of
green; the first testing for protanopia and the second for deuteranopia.
Price for Color Blind Test Ishihara
14 Plates $ 139.00
24 Plates $ 179.00
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Phone: (305) 593 - 2015
3026 NW 79 AVE.
Miami, Florida 33122