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4 Meter PV Numbers Series ETDRS Chart With Islands Scrambled Version B

Precision Vision

SKU : 2703B

PV Number optotypes follow a Sloan standard.


For Testing at 4 Meters (13 Feet).

Much like Patti Pics optotypes, PV Number optotypes follow a Sloan standard. Not only do PV Numbers adhere to the Sloan 5×5 grid, but the numbers have been chosen specifically for their difficulty level. PV Numbers also have an equal blur at the threshold. By following a constant standard for each charts recordings are more accurate and reliable. Also, each test will have the same results no matter if it uses Sloan, PV Numbers, or Patti Pics optotypes.

Brands

Precision Vision

Specification

Weight 1 lbs
Dimensions 27 × 27 × 0.04 in
Version Full Set of Three, Scrambled Version A, Scrambled Version B, Standard
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