Patti Pics™ Folding Eye Chart

MassVAT Designed by: Luisa Mayer, Ph.D. and Bruce Moore, O.D.

Can be hand-held or there is a hole in the top to allow for wall mounting.

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.