MassVAT Designed by: Luisa Mayer, Ph.D. and Bruce Moore, O.D.
Can be hand-held or wall-mounted.
Proportional spacing Acuity range 30M to 1.2M (20/200, 6/60 to 20/8, 6/2.4 equiv.) Two smaller groups 6M to 1.2M (20/40, 6/12 to 20/8, 6/2.4 equiv.).
MassVAT format Acuity range 15M to 1.2M (20/100, 6/30 to 20/8, 6/2.4 equiv.).
Patti Pics Folding Acuity Chart features two smaller groups of optotypes. These are intended for use in repetitive testing. By having multiple groups, the chance of memorization is minimized and more accurate results are yielded. This folding test is great for screening pediatric vision.