Color Blindness 7
The Ishihara test is a color vision test for detection of red–green color deficiencies. It was named after its designer, Shinobu Ishihara, a professor at the University of Tokyo, who first published his tests in 1917.
The test consists of a number of Ishihara plates, which are a type of pseudoisochromatic plate. Each plate depicts a solid circle of colored dots appearing randomized in color and size. Within the pattern are dots which form a number or shape clearly visible to those with normal color vision, and invisible, or difficult to see, to those with a red–green color vision defect. Other plates are intentionally designed to reveal numbers only to those with a red–green color vision deficiency, and be invisible to those with normal red–green color vision. The full test consists of 38 plates, but the existence of a severe deficiency is usually apparent after only a few plates.
This tray is a 13x9" oval with a depth of 1/4."
© Why Girls Go Astray
Please see our "Details" section for more information on the construction, and care of our table trays. In the potichomania process, the glass acts as both a foundation and protective finish, saving the step of varnishing. The original intent was to recreate Greek and Etruscan vases by simulating rare and expensive Sevrés porcelain.
© Why Girls Go Astray. All rights reserved.
Details & Care of Tray
This tray measures approximately 9x13 inches. The relative thinness of the tray – just over 1/8” thick – belies the complexity of the potichomania process. Each of our trays is comprised of a glass tray, three layers of 28# paper, four coatings of varnish, and finished with two coats, each of paint and clear acrylic spray. We’ve added a high-quality felt pad on the bottom in order to protect your home surfaces.a
Care: Please spray with a gentle glass cleanser and wipe clean. Do not submerge in water. For decorative purposes only.
©Why Girls Go Astray. All rights reserved.