Specification Brand : KASHSURG BulletPoint : Designed to be read from a distance measured in meters. BulletPoint1 : Vanishing design: Only people with good color vision can see the sign. If you are colorblind you won’t see anything. BulletPoint2 : Transformation design: Color blind people will see a different sign than people with no color vision handicap. BulletPoint3 : Hidden digit design: Only colorblind people are able to spot the sign. If you have perfect color vision, you won’t be able to see it. BulletPoint4 : Classification design: This is used to differentiate between red- and green-blind persons. The vanishing design is used on either side of the plate, one side for deutan defects an the other for protans. BulletPoint5 : Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! CustomerPackageType : Standard Packaging ExternallyAssignedProductIdentifier : 8906121590043 ExternallyAssignedProductIdentifier1 : 050948038108 ExternallyAssignedProductIdentifier2 : 0050948038108 ExternallyAssignedProductIdentifier3 : 0706026950120 ExternallyAssignedProductIdentifier4 : 696693248692 ExternallyAssignedProductIdentifier5 : 706092546180 ExternallyAssignedProductIdentifier6 : 706026950120 ItemForm : other ItemName : ISHIHARA Color Vision Test Book with 38 Plate with User Manual ItemPackageDimensions_Height : 22 centimeters ItemPackageDimensions_Length : 3.7 centimeters ItemPackageDimensions_Width : 16.7 centimeters ItemPackageQuantity : 1 ItemShape : Rectangular ItemTypeKeyword : therapeutic-eye-charts Manufacturer : INDIA Material : paper ModelNumber : 8542032982 NumberOfItems : 1 PartNumber : PR-COM-RT-X1072279 ProductDescription : Dr Shinobu Ishihara introduced in 1917—almost 100 years ago—the most well known color blindness test. Each of his tests consists of a set of colored dotted plates, each of them showing either a number or a path. Since then this is the most widely used color vision deficiency test and still used by most optometrists and ophthalmologists all around the world. There are other color blindness tests available, but none of them is as famous as the Ishihara plates. It is also well known, that even people with normal color vision sometimes struggle with this test. But nevertheless this plates are still in use in the absence of any better and still affordable color vision test. ProductSiteLaunchDate : 2017-09-29T07:00:00.000Z Size : 1 Count (Pack of 1) Style : Top SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1