If a proportionally spaced chart is too difficult for your patients, try using a chart containing a MassVAT format. Testability using the MassVAT format in young 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 amblyopia.
MassVAT Developed by: Luisa Mayer, Ph.D. and Bruce Moore, O.D. MassVat formats are available in many different style charts.
Shipping Weight: 1 lbs
Shipping Dimensions: 17 × 11 × 1 in
ETDRS Format: No
MassVAT Chart: Yes
Testing Distance: 6m / 20ft
Utilize with Cabinet: Yes
Utilize with which Cabinet: 914/930
Contrast Level: High
Patient Type: General/Literate, Preliterate
Optotype: PV NUMBERS
Optotype Arrangement: Single or Isolated Row
Translucent Chart: Yes
Cord: No
Chart Size (Inches): 9×14 in
Chart Size (cm): 23×35.5 cm
Chart Notations - Munit: 12M to 2.4M
Chart Notations - Snellen: 20/80 to 20/16
Chart Notations - LogMAR: .6 to -0.1
Chart Notations - Decimal: .25 to 1.25
Chart Notations - 6 meter: 6/24 to 6/4.8
Chart Notations - 10 foot: 10/40 to 10/8
