Specification Brand : KASHSURG BulletPoint : Set of 5 BulletPoint1 : Color blind test for adults-- the english version of the product makes it convenient for english-speaking users to conduct the tests,vision book. BulletPoint2 : Color chart-- simple design, easy to use, clear printing, easy to identify, useful and practical,colorblind test. BulletPoint3 : Visual examination chart-- enables early detection of color visual impairments for timely treatment,color blind testing. BulletPoint4 : Color blind cards-- it also allows for detection of the color visual impairment, ensuring timely treatment,eye blind. BulletPoint5 : Color blind testing -- specifically designed in english version to facilitate easy testing by english-speaking users,color test book. Capacity : 11 fluid_ounces Color : As Shown ExternallyAssignedProductIdentifier : 8464861766857 IncludedComponents : Mug ItemDisplayDimensions_Height : 3.8 inches ItemDisplayDimensions_Length : 3.82 centimeters ItemDisplayDimensions_Width : 3.2 inches ItemDisplayWeight : 0.03 pounds ItemName : KASHSURG Ishihara Test Chart Books, for Color Deficiency (Pack of 5) ItemPackageDimensions_Height : 0.39 inches ItemPackageDimensions_Length : 4.21 inches ItemPackageDimensions_Width : 3.74 inches ItemShape : Rectangular ItemTypeKeyword : therapeutic-eye-charts Manufacturer : KASHSURG Material : paper ModelName : Cs121_50pc_Pack of 2 ModelNumber : Cs121_50pc_Pack of 2 NumberOfItems : 5 NumberOfLithiumMetalCells : 1 OccasionType1 : Mother's Day OccasionType2 : Birthday OccasionType3 : Christmas OccasionType4 : Father's Day Orientation : Portrait PaintType : Oil PartNumber : Cs121_50pc_Pack of 2 ProductDescription : 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 misconcepti ProductSiteLaunchDate : 2024-08-17T14:43:36.271Z RecommendedUsesForProduct : Travel, Nursing, Outdoor, Home Size : 9.70X8.50X0.30CM Style : Modern SupplierDeclaredDgHzRegulation : not_applicable Theme : Vintage UnitCount : 5 UnspscCode : 41111700