HOTV MassVAT Charts

2.5 or 3 Meter HOTV MassVAT Chart Constructed with the same precision, accuracy, and methodology as traditional ETDRS charts. Can be wall-mounted or utilized within the ETDRS Illuminator Cabinets.


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The MassVat format incorporates boxes around optotypes that are referred to as contour interaction bars. These bars help patients focus on each line and can raise testing results. Also, the contoured interaction bars help detect early signs of Amblyopia.  Can be wall-mounted or utilized within the ETDRS Illuminator Cabinets.
MassVAT Designed by: Luisa Mayer, Ph.D. and Bruce Moore, O.D.