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
(for scrambled version order CAT. NO. 2512 (set 2) in the spec instructions when ordering)
Measures 8.25 X 23cm (3.25 X 9 in.)
Includes response key (Cat.No. 2517 and 2518)
Patti Pics flip book features a MassVat design. This design uses a contour bar around the optotype lines for adequate contour interaction. Testing pediatrics with the MassVat design yields high results. The use of the MassVat contoured lines helps in the detection of childhood vision problems such as Amblyopia.
IS
