Precision Vision 2.5-Metre ETDRS LogMAR Eye-Test (Chart 1 Original)

For a visual acuity and low-vision eye-test chart that's also suitable for clinical studies, consider the Precision Vision 2.5-Metre ETDRS LogMAR Eye-Test (Chart 1 Original). This unrevised chart design uses rows of 5 Sloan optotype letters, which decrease in size down the page. For ease-of-display, this chart is compatible for use with select illuminated chart cabinet models (sold separately).

What's Included?

• 1 x ETDRS LogMAR Chart

What Is the Function of a LogMAR Test?

ETDRS logMAR charts are a type of eye-test. This particular ETDRS logMAR test is ideal for testing visual acuity, and conduct low vision assessments. This original chart design is suitable for testing by eyecare specialists, doctors, vehicle licensing agencies, and during clinical studies.

Key Features and Benefits

• ETDRS logMAR eye-test chart
• Ideal for assessing the visual acuity of a wide range of patients
• Can also be used for low-vision assessments
• Suitable for use by optometrists, doctors, and vehicle licensing agencies
• Standardised test design is acceptable for use in studies sponsored by the American National Eye Institute
• Designed for testing at a distance of 2.5 metres
• Provides accurate and repeatable results
• Includes lines of equal optotype difficulty, that decrease in size down the page
• Acuity range of 25.2 - 1.2 metres
• Constructed to fit into specific Sussex Vision illuminated cabinets (not included)

Original Versus Revised ETDRS Charts

The original and revised chart designs may look similar, but there are some key differences between them. This includes:

• The original chart design is suitable for use in clinical studies sponsored by the American National Eye Institute, the revised design is not
• Only the original chart can be used for low vision evaluation
• Revised and original charts have a different letter-difficulty scoring system
• Each chart uses the same letters, but presents them in different orders

Compatible Illuminated 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

The 2.5-Metre ETDRS LogMar Test (Chart 1 Revised) is a fantastic alternative to this original model, with a revised chart design.