Precision Vision 4-Metre ETDRS LogMAR Eye-Test (Chart R Original)

The Precision Vision 4-Metre ETDRS LogMAR Eye-Test (Chart R Original) is handy vision testing chart ideal for visual acuity testing at a 4-metre distance. This original chart design is also suitable for use during low vision assessments, and for clinical studies sponsored by the American National Eye Institute. For ease-of-display, this chart is suitable for use with select illuminated eye-test cabinets.

What's Included?

• 1 x LogMAR Chart

What Is the Purpose of the ETDRS LogMAR Chart?

ETDRS logMAR charts are designed for use during visual acuity testing, with this particular chart being designed for testing at a 4-metre distance. Original chart designs such as this one are also suitable for low vision assessments, and for clinical studies sponsored by the American National Eye Institute. The chart format includes rows of 5 Sloan optotype letters each, which decrease in size as they go down the page.

Key Features and Benefits

• ETDRS logMAR test type with original design
• Chart is ideal for eyecare specialists and vehicle licensing agencies
• Designed for conducting visual acuity tests and low vision tests
• For testing at a 4-metre distance
• Suitable for use in clinical studies sponsored by the American National Eye Institute
• Designed with rows of 5 Sloan optotype letters each
• Rows of letters decrease in size as they go down the page
• Lines are designed to be of equal difficulty
• Offers accurate and repeatable results
• Has an acuity range of 40m - 2m
• Suitable for use with select eye-test chart cabinets (sold separately)

Original Versus Revised Designs

The range of Precision Vision ETDRS logMAR charts include both original and revised designs. The differences between these designs include:

• The original ETDRS logMAR charts are the only standardised chart type suitable for clinical studies sponsored by the American National Eye Institute
• Only original charts are designed for low vision assessments
• The letter-difficulty score of each chart differs, with the revised chart's scoring being based on an ETDRS study of 7420 eyes
• The letters used for original and revised chart designs are the same, but are arranged differently on each chart

Compatible Illuminated Eye-Test Cabinets

For easy and clear display of this original-design ETDRS logMAR chart, we would recommend using an illuminated eye-test cabinet. Compatible options include:

• LogMAR Illuminated Eye-Test Cabinet
• LogMAR Illuminated Eye-Test Cabinet (Slim)

Alternative Eye-Test Charts

If you require a chart with a revised design, there are plenty of alternatives to choose from:

• 2-Metre ETDRS LogMAR Eye-Test (Chart 1 Revised)
• 2-Metre ETDRS LogMAR Eye-Test (Chart 2 Revised)
• 2-Metre ETDRS LogMAR Eye-Test (Chart 3 Revised)