RETURN TO 'N.V. LOGMAR
CHARTS' PRICELIST
INTRODUCTION TO PATTI PICS.

MassVAT (Massachusetts Visual Acuity Test)
If the proportionally spaced side of the chart is too
difficult for the patient, try the
reverse side with the MassVAT format chart. The Testability using the
MassVAT
format in children is high. The rectangular outline surrounding the five
optotypes is
50% of the width of the optotype. Thus, it provides adequate contour interaction
to
detect ambliopia.