Ishihara S Test Chart Book

Author by : Dr Shinobu Ishihara
Language : en
Publisher by : The memory Guru of India, 123 D, Pardevanpur, Kanpur-208007 India
Format Available : PDF, ePub, Mobi
Total Read : 17
Total Download : 928
File Size : 43,8 Mb
pdf pdf

Description : COLORBLINDNESS/COLOURBLINDNESS/COLOR BLINDNESS/COLOUR BLINDNESS/ Accepted by leading authorities as a simple and accurate method for discovering congenital color blindness and red-green blindness, each in two forms, complete and incomplete. Includes four special plates for tests to determine the kind and degree of defect in color vision. Makes use of the peculiarity that in red-green blindness, blue and yellow appear remarkably bright compared with red and green. Color plates encased in specially designed album-type books for ease of handling. Detailed instructions included Test Chart Books Features:* Accepted by leading authorities as a simple and accurate method for discovering congenital color blindness and red-green blindness, each in two forms, complete and incomplete.* Includes four special plates for tests to determine the kind and degree of defect in color vision.* Makes use of the peculiarity that in red-green blindness, blue and yellow appear remarkably bright compared with red and green.* Consist of a number of colored plates.* 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, but the existence of a deficiency may be clear after fewer plates.* The Ishihara Color charts are accepted by leading authorities worldwide as a simple and accurate test method.* Color plates encased in specially designed album-type books for ease of handling.* Detailed instructions included.What is colorblindness? * 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 color blind seem to have the misconception that color blindness means that a color blind person sees only in black and white or shades of gray. While this sort of condition is possible, it is extremely rare.* The Ishihara color test is a test for color blindness* It was named after its designer, Dr. Shinobu Ishihara (1879-1963), a professor at the University of Tokyo, who first published his tests in 1917.* It makes use of the peculiarity that in red-green blindness, blue and yellow appear remarkably bright compared to red and green.* It consists of a number of colored plates, 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, but the existence of a deficiency is usually clear after fewer plates.* The Ishihara Color Charts are accepted by leading authorities worldwide as a simple and accurate test method. * The color plates are available in an album-type book for ease of handling. The books are printed in Japan and are protected by international copyright.Graham-Field has been supplying the healthcare market with one of the broadest selections of high quality healthcare products and services. All of their products have been designed with a single objective - to enhance the quality of life of the people that use their products and their caregivers.Their brands, such as Everest & Jennings and LaBac, Lumex, Labtron, Grafco, Smith & Davis and Simmons-offer the quality and value you've come to trust. Recent Tags: Exam Room Equipment > Vision Testing > Color Vision Tests, Test Chart Books Features:* Accepted by leading authorities as a simple and accurate method for discovering congenital color blindness and red-green blindness, each in two forms, complete and incomplete.* Includes four special plates for tests to determine the kind and degree of defect in color vision.* Makes use of the peculiarity that in red-green blindness, blue and yellow appear remarkably bright compared with red and green.* Consist of a number of colored plates.* 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, but the existence of a deficiency may be clear after fewer plates.* The Ishihara Color charts are accepted by leading authorities worldwide as a simple and accurate test method.* Color plates encased in specially designed album-type books for ease of handling.* Detailed instructions included.What is colorblindness? * 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 color blind seem to have the misconception that color blindness means that a color blind person sees only in black and white or shades of gray. While this sort of condition is possible, it is extremely rare.* The Ishihara color test is a test for color blindness* It was named after its designer, Dr. Shinobu Ishihara (1879-1963), a professor at the University of Tokyo, who first published his tests in 1917.* It makes use of the peculiarity that in red-green blindness, blue and yellow appear remarkably bright compared to red and green.* It consists of a number of colored plates, 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, but the existence of a deficiency is usually clear after fewer plates.* The Ishihara Color Charts are accepted by leading authorities worldwide as a simple and accurate test method. * The color plates are available in an album-type book for ease of handling. The books are printed in Japan and are protected by international copyright.Graham-Field has been supplying the healthcare market with one of the broadest selections of high quality healthcare products and services. All of their products have been designed with a single objective - to enhance the quality of life of the people that use their products and their caregivers.Their brands, such as Everest & Jennings and LaBac, Lumex, Labtron, Grafco, Smith & Davis and Simmons-offer the quality and value you've come to trust., Ishihara Test Chart Book, for Color Deficiency, 38 Plate Book


Color Vision And Color Blindness

Author by : John Ellis Jennings
Language : en
Publisher by :
Format Available : PDF, ePub, Mobi
Total Read : 56
Total Download : 152
File Size : 53,5 Mb
pdf pdf

Description :


Colour Blindness And Colour Perception

Author by : Frederick William Edridge-Green
Language : en
Publisher by : Theclassics.Us
Format Available : PDF, ePub, Mobi
Total Read : 82
Total Download : 546
File Size : 43,6 Mb
pdf pdf

Description : This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1891 edition. Excerpt: ... CHAPTER XIII. THE CLASSIFICATION OF THE COLOUR-BLIND. In the preceding chapters I have discussed the causes of colour-blindness. The chief causes are--1. Diminution in the number of psycho-physical colour units. 2. Shortening of one or both ends of the spectrum. An examination with the spectrum gives a key to the colour-vision of any person. We can record the number of units which a person sees in the spectrum, and the degree of shortening in each case. It will then be found that persons will make mistakes in accordance with the examination with the spectrum. In the first class we may include those persons who, whilst belonging to the class of the six-unit, have a spectrum which is shortened at one or both ends. The remainder of the colour-blind may be classified according to their psycho-physical colourperception. Then, if the normal-sighted be designated hexachromic, the five-unit may be called pentachromic, the four-unit tetrachromic, the three-unit trichromic, the two-unit dichromic, and the one-unit totally colour-blind. In addition, the degree of shortening of the spectrum should be recorded, if present. In the case of the twounit, the presence or absence of a neutral band should be recorded. When present, its relative size should be given. It is obvious that a classification which is based upon K what the colour-blind actually see must present many advantages over one which is based upon theoretical deductions. Though the facts on which these classifications are based were obtained in the first place by theory, this has no effect upon the circumstance that they are facts with which any future theory must conform. In this classification I have therefore given typical cases, and the methods which I used to ascertain the...


Introduction To Light

Author by : Gary Waldman
Language : en
Publisher by : Courier Corporation
Format Available : PDF, ePub, Mobi
Total Read : 70
Total Download : 400
File Size : 55,9 Mb
pdf pdf

Description : Designed for a nonmathematical undergraduate optics course addressed to art majors, this four-part treatment discusses the nature and manipulation of light, vision, and color. Questions at the end of each chapter help test comprehension of material, which is almost completely presented in a nonmathematical manner. 170 black-and-white illustrations. 1983 edition.


Basic Vision

Author by : Robert Snowden
Language : en
Publisher by : Oxford University Press
Format Available : PDF, ePub, Mobi
Total Read : 46
Total Download : 880
File Size : 48,6 Mb
pdf pdf

Description : Basic Vision: An Introduction to Visual Perception demystifies the processes through which we see the world. Written by three authors with over 80 years of research and undergraduate teaching experience between them, it leads the reader through the intricacies of visual processing, with full-colour illustrations on nearly every page.


Researches In Colour Vision And The Trichromatic Theory

Author by : Sir William de Wiveleslie Abney
Language : en
Publisher by :
Format Available : PDF, ePub, Mobi
Total Read : 69
Total Download : 459
File Size : 54,6 Mb
pdf pdf

Description :


Colour Physics For Industry

Author by : Roderick McDonald
Language : en
Publisher by :
Format Available : PDF, ePub, Mobi
Total Read : 35
Total Download : 793
File Size : 46,6 Mb
pdf pdf

Description :


The Art Of Color Photography

Author by : John Hedgecoe
Language : en
Publisher by : Fireside
Format Available : PDF, ePub, Mobi
Total Read : 91
Total Download : 458
File Size : 52,6 Mb
pdf pdf

Description : Encourages an awareness of the creative choices involved in color photography by demonstrating how to effectively use color, shapes and silhouettes, tone and hue, texture, backgrounds, composition, and lines


Interaction Of Color

Author by : Josef Albers
Language : en
Publisher by : Yale University Press
Format Available : PDF, ePub, Mobi
Total Read : 99
Total Download : 853
File Size : 53,5 Mb
pdf pdf

Description : Conceived as a handbook and teaching aid for artists, instructors, and students, this timeless book presents Albers' unique ideas of color experimentation in a way that is valuable to specialists as well as to a larger audience.


Colour Vision

Author by : Sir William de Wiveleslie Abney
Language : en
Publisher by :
Format Available : PDF, ePub, Mobi
Total Read : 12
Total Download : 691
File Size : 52,9 Mb
pdf pdf

Description :