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Trans-Illuminated Contrast Sensitivity Pelli-Robson Chart SLOAN Peak Contrast Sensitivity – Chart A

Precision Vision

SKU : 5017A

Pelli-Robson Trans-Illuminated Contrast Sensitivity Chart
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.

  • Pelli-Robson Trans-Illuminated Contrast Sensitivity Chart
  • 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.
  • Trans-illumination has the advantage of uniform fixed illumination and eliminates the need for staging the room and verifying chart luminance with room lighting. These charts require using our ETDRS Illuminator Cabinet™, Cat. No. 2425 and our 85 cd/m2 lamp filter, Cat No 2427D85.
  • Chart 5017 designated for Peak Contrast Sensitivity uses the lower 12 contrast levels ranging from 0.6 – 2.25 Log CS (25% – 0.56% Weber)
  • These charts are manufactured to tolerances better than the accepted standard of /- .05 Log CS and researchers can order reports of actual contrast values to accompany their chart at the time of ordering for an additional charge.
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Precision Vision