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Specification
Brand : Graham-Field
BulletPoint : McKesson smooth paper roll equips medical exam tables with a sufficient and safe barrier for the patients
BulletPoint1 : Grafco Ishihara Test Chart Book
BulletPoint2 : Package Info: Each
BulletPoint3 : Includes four special plates for tests to determine the kind and degree of defect in color vision.
BulletPoint4 : Image may not reflect actual product sold. Please read description carefully.
BulletPoint5 : GHF1254
Color : Blue
ExternallyAssignedProductIdentifier1 : 717076043021
ExternallyAssignedProductIdentifier2 : 0717076043021
GpsrSafetyAttestation : 1
ItemName : Ishihara Test Chart Books, for Color Deficiency
ItemPackageDimensions_Height : 22.1996 centimeters
ItemPackageDimensions_Length : 1.7018 centimeters
ItemPackageDimensions_Width : 15.494 centimeters
ItemPackageQuantity : 25
ItemTypeKeyword : therapeutic-eye-charts
Manufacturer : Graham Field
ModelNumber : 1254
NumberOfItems : 1
NumberOfPieces : 14
PaperFinish : smooth
PartNumber : 1254
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 : 2004-05-27T00:01:00-00:00
RecommendedUsesForProduct : Crafts
SheetCount : 12
Size : 1 Count (Pack of 1)
SpecificUsesForProduct : Color Deficiency Chart Book
StreetDate : 2017-03-02T00:00:01Z
SupplierDeclaredDgHzRegulation : not_applicable
SupplierDeclaredHasProductIdentifierExemption : 1
UnitCount : 1
UnspscCode : 55101500