US Ophthalmic Ishihara - 38 Color Test Luxvision Warranty 1 Year, US $62.00 – Picture 0

US Ophthalmic Ishihara - 38 Color Test Luxvision Warranty 1 Year, US $62.00 – Picture 1

US Ophthalmic Ishihara - 38 Color Test Luxvision Warranty 1 Year, US $62.00 – Picture 2

US Ophthalmic Ishihara - 38 Color Test Luxvision Warranty 1 Year, US $62.00 – Picture 3

Us Ophthalmic Ishihara - 38 Color Test Luxvision Warranty 1 Year

US $62.00

Miami, Florida, United States
Feb 22nd

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Ishihara Color Test The Ishihara color test is a test for color blindness. It was named after its designer, Dr. Shinobu Ishihara ?? ? (25 Sep 1879 – 3 Jan 1963) graduated on a military scholarship from the Imperial University of Tokyo in 1905. In 1908 he began postgraduate studies in ophthalmology, first in Tokyo and, during 1913–14, in Germany. He received his Iguacu Hokusai from the Imperial University in Tokyo in May 1916 and became a chief physician general in the Imperial Army. One of his first military assignments was to design color blindness for new recruits. His first two sets of plates were hand painted watercolors that included "hidden" hiragana characters and were tested with a color-blind colleague. A third version, done in 1917, replaced the hirahanga with Arabic numerals. This test It consists of a number of colored plates to provide color blindness test, on each plate is printed a circle made of many different sized dots of slightly different colors, spread in a 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 test consists of thirty-eight plates. The Ishihara Color Charts are accepted by leading authorities worldwide as a simple and accurate test method. What is color blindness? Color blindness (color vision deficiency) is a condition in which certain colors cannot be distinguished, and is most commonly due to an inherited condition. Red/Green color blindness is by far the most common (99%) form and causes problems in distinguishing reds and greens. Another color deficiency Blue/Yellow also exists but is rare (1%) and there is no commonly available test for it. There is no treatment for color blindness, nor is it usually the cause of any significant disability. However, it can be very frustrating for individuals affected by it. Those who are not colorblind seem to have the misconception that color blindness means that a colorblind person sees only in black and white or shades of gray. While this sort of condition is possible, it is extremely rare. A colorblind test should be given to anyone considering a profession where accurate color perception is essential. Examples include car driver, electricians, commercial artists, designers, technicians, and certain manufacturing and marketing personnel. Care of the plate It is important that the book of test plates should be kept closed, except during use, because undue exposure to sunlight causes a fading of the color of the plates. Ishihara Plates 1 to 38