Precision Vision Chart 3 Revised ETDRS LogMAR Chart (3-Metre Testing)

The Precision Vision Chart 3 Revised ETDRS LogMAR Chart (3-Metre Testing) is a standardised test for measuring visual acuity and clarity in a range of patients. This particular test type consists of fourteen lines with 5 Sloan optotype letters per line, with each line decreasing in size further down the page. The test has been designed for conducting tests at a 3-metre distance.

What's Included?

• 1 x EDTRS LogMAR Chart

What Is the Function of This EDTRS LogMAR Chart?

A logMAR or ETDRS chart is a standardised vision test designed with fourteen lines of 5 Sloan optotype letters that decrease in size towards the bottom of the chart. These charts are used to examine visual clarity and acuity by assessing how well patients are able to see and read the smaller letters at a specified distance.

What Does the Chart Being Revised Mean?

There is a slight change in the difficulty score for each of the Sloan letters in the revised charts. These revised scores derive from the visual acuity examinations of the 7420 eyes during the ETDRS study in which this specific type of logMAR chart was developed. These revisions also involved the arrangement of the letters being changed.

Key Features and Benefits

• ETDRS type logMAR chart
• Ideal for assessing visual clarity and acuity at a distance of 3 metres
• Ideal for use in opticians' offices, GP surgeries, and vehicle licensing institutions
• Each of the ten letters are represented at least once in every position
• Revised chart includes a change in difficulty scores and letter arrangement

Compatible Display Cabinets

This chart can be easily wall mounted using specific illuminated eye-test cabinets. Compatible cabinet options include:

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