MassVAT Designed by: Luisa Mayer, Ph.D. and Bruce Moore, O.D.
Notations for vision testing at 3 meters (10 ft.)
Eye chart measures 43 X 51 cm (17 X 20 in.)
Folds to 43 X 25.4 cm (17 X 10 in.)
Eye test chart can be hand-held or wall-mounted
Includes response key (Cat.No. 2517 and 2518)
FRONT
Proportional spacing
Visual Acuity range 30M to 1.2M (20/200 to 20/8 equiv.) Two smaller groups 6M to 1.2M (20/40 to 20/8 equiv.)
BACK
MassVAT format
Visual Acuity range 15M to 1.2M (20/100 to 20/8 equiv.)
Amblyopia, or Lazy Eye, is a vision problem that effects the vision in one of the patients eyes. It is not normally detectable by simply looking at the eye. Tests that use interaction bars, such as MassVat, crowding bars, or contour lines help detect Amblyopia. 1-5% of the population is affected by Amblyopia and early detection is key.
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