Precision Vision 4-Metre ETDRS LogMAR Eye-Test (Chart 1 Revised)

The Precision Vision 4-Metre ETDRS LogMAR Eye-Test (Chart 1 Revised) provides a way of conducting visual acuity tests at a 4-metre distance. The revised design consists of rows of 5 Sloan optotype letters which decrease in size down the page, with a letter-difficulty scoring system developed from an ETDRS study involving the examination of 7420 eyes. Each letter in this chart is presented at least once in each position.

What's Included?

• 1 x Eye-Test Chart

What Is the Purpose of the LogMAR Chart?

The ETDRS logMAR eye-test chart has been designed for conducting visual acuity tests. This particular chart design is for testing at a 4-metre distance, and is ideal for use by eyecare specialists and vehicle licensing agencies.

The chart design consists of rows of 5 Sloan optotype letters which decrease in size as they go down the page.

What Does the Chart Being Revised Mean?

This Precision Vision logMAR chart design features a revised design, with the original design being available for purchase separately. The differences between the original and revised designs include:

• This revised design is not suited to clinical studies sponsored by the American Eye Institute, the original chart design is
• The letter-difficulty scores of each chart differs, with the revised chart scoring being based on an ETDRS study
• The original and revised designs for Chart 1 use the same letters, but present them in a different order
• The original chart is also suitable for low vision assessments

Key Features and Benefits

• ETDRS logMAR eye-test chart with revised design
• Ideal for use by eyecare specialists and vehicle licensing agencies
• Suitable for conducting visual acuity tests
• Designed for testing at a 4-metre distance
• Revised chart design presents each letter at least once in each position
• Letter-difficulty score determined a study that involved the assessment of 7420 eyes
• Each row of letters is of equal difficulty to the previous row
• Has an acuity range of 40m - 2m
• Compatible with select illuminating eye-test cabinets (sold separately)

Compatible Illuminating Eye-Test Cabinets

There are various ways that this chart can be displayed, included by being wall-mounted using an illuminated eye-test cabinet. Compatible cabinet options include:

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

Alternative Eye-Test Charts

If you require an original eye test design for use during a clinical study, or for low vision assessments, check out some of the great options below:

• 4-Metre ETDRS LogMAR Eye-Test (Chart 1 Original)
• 4-Metre ETDRS LogMAR Eye-Test (Chart 2 Original)