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Snellen Distance Vision Eye Chart 20 Feet

R 1,228

or 4 x payments of R307.00 with Payflex

Availability: Currently in Stock

Delivery: 10-20 working days

Snellen Distance Vision Eye Chart 20 Feet
- Designed for vision testing at 20 foot distance
- Non-reflecting, matte finish eye charts
- Eye chart measures 22 x 11 in.
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.
Country USA
Brand Visionären
Manufacturer KSIPL
Binding Unknown Binding
ItemPartNumber DP-5001
Model DP-5001
Size Large
UnitCount 1
ReleaseDate 0000-00-00

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Country	USA
Brand	Visionären
Manufacturer	KSIPL
Binding	Unknown Binding
ItemPartNumber	DP-5001
Model	DP-5001
Size	Large
UnitCount	1
ReleaseDate	0000-00-00