Precision Vision 2.5-Metre ETDRS LogMAR Chart (Chart 3 Revised)

The Precision Vision 2.5-Metre ETDRS LogMAR Chart (Chart 3 Revised) is a quality visual-acuity test option suitable for eyecare specialists, and for vehicle licensing agencies. The revised design of this chart ensures that each letter is presented at least once in each position on the chart, and bases its letter-difficulty score off of an ETDRS study of 7420 eyes. The chart has an acuity range of 25.2 - 1.2m.

What's Included?

• 1 x Eye-Test Chart

What Is the Function of the LogMAR Eye-Test?

This Precision Vision ETDRS LogMAR Chart has been designed for conducting visual acuity tests at a 2.5 metre distance. The format of the chart includes rows of Sloan optotype which decrease in size as they go down the page.

What Does This Being a Revised Design Mean?

For most of the Precision Vision ETDRS LogMAR Charts, there are both original and revised designs available. The differences between the two include:

• The revised design is not suitable for use in clinical studies sponsored by the American National Eye Institute, while the original design is
• This revised design includes a revision in letter-difficulty scoring. The revised difficulty score is based on an ETDRS test which involved the assessment of 7420 eyes
• Original and revised designs feature the same letters, but presented in a different order

Key Features and Benefits

• EDTRS logMAR type eye-test chart
• Suitable for use by eyecare specialists, doctors, and vehicle licensing agencies
• Ideal for visual acuity testing
• Designed for testing at a 2.5 metre distance
• Revised chart design presents each of the ten letters at least once in each position
• Letter-difficulty scoring is based off an ETDRS study that involved the assessment of 7420 eyes
• Each row of letters is of equal difficulty to the previous one
• Designed to fit in specific Precision Vision illuminated eye-test cabinets
• Has an acuity range of 25.2 - 1.2m

Compatible Illuminated Eye-Test Cabinets

This eye-test chart design can be easily displayed in 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 are looking for an original chart design, suitable for clinical studies and low vision testing, check out these great options:

• 2.5-Metre ETDRS LogMAR Eye-Test (Chart 1 Original)
• 2.5-Metre ETDRS LogMAR Eye-Test (Chart R Original)