Informasjon
LEA NUMBERS® – Low Contrast ring binder
5 pages in 25 %, 10 %, 5 %, 2.5 % and 1.25 % contrast (1 m),
Format: 3.25" x 9" (8.25 cm x 22.9 cm)
Good-Lite: 270400
Now it's easy to measure, record and detect changes in the transfer of visual information when the change only affects visual acuity at low contrast levels.
Pages are offset for easy flipping. Each chart includes recording forms and instructions.
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Format: 3.25 "Pin It")
