Eyevision Fiber Logmar Chart Vision Test Chart (Snellen)

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Description

he Logmar Chart 2 Revised incorporates a slight change in the difficulty score for each of the ten Sloan letters derived from the best visual acuity examinations of 7420 eyes during the ETDRS study. The original charts difficulty scores were derived from the examination of 234 eyes. In addition to the revised arrangement of letters which resulted in the ultimate homogeneity of difficulty per line, the three charts are balanced so that in each chart the ten letters are represented at least once in every position.

Specifications

In The Box

1 Vision Test Chart

General

Brand	Eyevision
Model Number	Fiber Logmar Chart
Type	Snellen
Material	Plastic

Dimensions

Test Distance	20 feet
Length	45 cm
Width	18 cm

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