MassVAT Designed by: Luisa Mayer, Ph.D. and Bruce Moore, O.D.
Multi-distance testing
Each flip chart page has five symbols in the MassVAT format at 9.5M size
The contrast levels vary by page: 25%, 10%, 5%, 2.5% and 1.2%
Two versions are available for repetitive testing (This is the scrambled version of Cat.No. 2511)
Measures 8.25 X 23cm (3.25 X 9 in.)
Includes response key (Cat.No. 2517 and 2518)
Patti Pics flip book features five separate levels of contrast for testing pediatric contrast sensitivity. This 2512 flip book uses different optotype configurations for the prevention of memorization. Repetitive testing with the use of both the Cat. No. 2511 flip book and the Cat. No. 2512 flip book is easy and reliable. Both charts include an easy to use response key for more accurate testing.
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