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Bailey Lovie Chart Set


SKU : 5000

The charts come as a set of two panels (21x24inches, 53x60cm) each with a high contrast chart one side and a low contrast chart (18% Weber or 10% Michelson) on the other. The optotype set is the family of ten British Standard (1968) 5×4 non-serifed letters


The charts standardized the test task so that size is the only significant variable from one row to the next. There are 5 letters per row, between-letter and between-row spacings equal to letter size, size progresses by a constant ratio (0.1 log unit = 1,26x), and letter difficulties are balanced for each row. Contrast Sensitivity. The difference in the number of letters read on the high and low contrast charts provides a measure of the slope of the Contrast Sensitivity Function. The charts come as a set of two panels (21x24inches, 53x60cm) each with a high contrast chart one side and a low contrast chart (18% Weber or 10% Michelson) on the other. The optotype set is the family of ten British Standard (1968) 5×4 non-serifed letters. There are 14 rows with a range of sizes from 38 to 1.9 M-units. Sizes are given in Snellen units (in both feet and metric units), as well as visual acuity values in LogMAR and VAR (Visual Acuity Rating) for a 6 meter viewing distance. Any other viewing distance may be used as well. A scale printed on each chart provides the score adjustment for different test distances. With the LogMAR and VAR scales, equal credit is given for each additional letter read (each extra letter earns -0.02 with LogMAR , or 1 point with VAR)

Optotype Arrangement ETDRS Format – Logarithmic
Chart Distance Multi-Distance
Utilize with which Cabinet None
Contrast Level Mixed
Low Contast Value 100%, 10%
Contrast Level Value 10%, 100%
Patient Type General/Literate
Optotype BAILEY-LOVIE
Utilize with a Cabinet No
ETDRS Format Yes
MassVAT Chart No
Translucent Chart No
Cord No
Chart Notations – LogMAR .8 to -0.5
Chart Notations – VAR 60 to 125
Chart Size (Inches) 21×24 in
Chart Size (cm) 53×60 cm