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  • LEA NUMBERS® – Low Contrast ring binder, mixed 52075A, układ mieszany

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LEA NUMBERS® – Low Contrast ring binder, mixed

Kolor/Wzór
540.00
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Now it is easy to measure, record, and detect changes in the transfer of visual information when the change only affects visual acuity at low contrast levels. These charts present numbers at the following contrast levels: 25%, 10%, 5%, 2.5%, and 1.25%. Each chart has 5 offset pages for easy flipping. Recording forms and instructions are included.

Dimensions: 9" x 3.25"  (22.9 cm x 8.25 cm).

Click here for the LEA Contrast Sensitivity Guide.

Click here for the Low Contrast Test Recording Form.

PDF DocumentInstrukcja użytkowania 250800

 PDF DocumentKarta wyników

 PDF DocumentPrzelicznik skali Decimal/Snellen

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