Specification Brand : Good-Lite Company BulletPoint1 : For examing infants or infants and children with multiple handicaps BulletPoint2 : Tests preferential looking BulletPoint3 : Easy to hold BulletPoint4 : Includes protective storage case BulletPoint5 : Plastic handheld eye occluder: durable-, can be for a period of time Color : As Shownx2pcs FcShelfLife : 365 days ItemName : LEA Gratings Preferential Looking Infant Eye Test ItemPackageDimensions_Height : 6 centimeters ItemPackageDimensions_Length : 20 centimeters ItemPackageDimensions_Width : 12 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : therapeutic-eye-charts Manufacturer : Good-Lite Company ModelNumber : 1500QG124YLC NumberOfItems : 1 PartNumber : 1500QG124YLC ProductDescription : In adults visual acuity is measured as “recognition acuity” which uses standard line tests. This type of test cannot be used in examining normal infants or infants and children with multiple handicaps. Visual acuity in these individuals is measured with grating acuity tests (preferential looking). The handle allows the tester to hold the test easily. Grating levels printed on handles: 0.25 and 0.5 cpcm, 1.0 cpcm and 2.0 cpcm and 4.0 and 8.0 cpcm. Includes instructions and storage case. Four paddles printed two sides. 8" (20.3 cm) diameter. ProductSiteLaunchDate : 2006-02-13T08:00:00.000Z Size : mediumx2pcs Style : centimeter SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 42183000