ETDRS charts for Illuminator cabinet 4M ( 13 feet ), Ophthalmic Clinical Research
SKU : 2702
4 Meter PV Numbers Series ETDRS Chart With Islands Standard
SKU : 2702
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 optotype
| Brands | Precision Vision |
|---|
Dimension : 27 × 27 × 0.04 in
LogMar Values : Yes
Testing Distance : 4 Meters (13 Feet)
Optotypes : Numbers
Contrast : No
Material : Plastic
Front Side : Yes
Back Side : No
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Ophthalmic Clinical Research, Pelli-Robson Trans-Illuminated Contrast Sensitivity Chart
Pelli-Robson Trans-Illuminated Contrast Sensitivity Chart – Low Vision
Ophthalmic Clinical Research, Pelli-Robson Trans-Illuminated Contrast Sensitivity ChartPelli-Robson Trans-Illuminated Contrast Sensitivity Chart – Low Vision
The trans-illuminated versions are identical to the original “Gold Standard” Pelli-Robson Contrast Sensitivity Charts. These charts cover ¾ of the original contrast range and are manufactured to the same true log steps and use the same letters and letter sizes as the originals.
SKU: 5016
