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Specification
Brand : Cosmid
BulletPoint1 : The Snellen eye test uses the idea of a subtended 5 minutes of arc with a 20 foot distance. This became the "standard vision" measurement. Also, Snellen developed the idea of a 5x5 grid for a standard for his optotypes. Each optotype must meet certain percentage requirements in this grid before it is used for testing. This helps to make a uniform and equal vision chart. The Snellen eye chart is the basis for many other vision tests.
BulletPoint2 : The Tumbling "E" vision chart is great for use with patients that are not familiar with the Roman alphabet. These patients simply have to gesture the direction they see the optotype since there is only one. This optotype is place in four different directions; up, down, left, and right. The Tumbling "E" chart is considered highly reliable and accurate. It is great for the detection of Astigmatism.
BulletPoint3 : Batteries required: False
BulletPoint4 : Magnification strength: 5.0 multiplier_x
BulletPoint5 : Handheld eye occluders tool-- suitable for all groups, preschoolers, kindergarteners, -age , adolescents, adults and seniors.
Color : Black
ItemDisplayDimensions_Length : 9.45 centimeters
ItemName : Cosmid Snellen and Tumbling E Non-Reflective Matte Finish Wall Eye Chart Combo Pack_ Size 22 x 11 Inch, Cs411
ItemPackageDimensions_Height : 4 inches
ItemPackageDimensions_Length : 15 inches
ItemPackageDimensions_Width : 4 inches
ItemTypeKeyword : therapeutic-eye-charts
MagnificationStrength : 5 multiplier_x
Manufacturer : Cosmid
Material : plastic
ModelName : Cs411
ModelNumber : Cs411
NumberOfItems : 1
PartNumber : Cs411
ProductDescription : Cosmid Snellen and Tumbling E Non-Reflective Matte Finish Wall Eye Chart Size 22 x 11 Inch Combo Pack
ProductSiteLaunchDate : 2024-03-16T09:31:35.931Z
Size : 24X6CM
SupplierDeclaredDgHzRegulation : not_applicable
UnitCount : 1