Sloan Letter Low Contrast Flip Chart737000
Easily measure, record, and detect changes in the transfer of visual information when the change affects only visual acuity at low contrast levels. Charts include the following contrast levels: 25%, 10%, 5%, 2.5%, and 1.25%. Features 5 offset pages for easy flipping. Each chart includes recording forms and instructions.
Dimensions: 3.25" x 9" (8.25 cm x 22.9 cm).