Precision Vision 3-Metre ETDRS LogMAR Chart (Chart 1 Revised)
When it comes to near-distance acuity testing, the Precision Vision 3-Metre ETDRS LogMAR Chart (Chart 1 Revised) is a fantastic choice of assessment tool. With an acuity range of 30 metres - 1.5 metres, this revised chart design features 10 Sloan optotype letters in lines of five, which decrease in size further down the page. This chart model is designed for testing at a three-metre distance.
What's Included?
What Is the Function of This Revised LogMAR Chart?
This ETDRS logMAR chart is a popular form of eye-test chart used to assess visual clarity and acuity. This specific model has been designed to test near-distance acuity, with patients standing at a 3-metre distance from the chart when being assessed.
What Does the Chart Being Revised Mean?
Revised ETDR logMAR charts were designed following visual acuity examinations of 7420 eyes during an ETDRS study. The revised chart shows a change in difficulty score from the original chart for each of the Sloan letters included. The arrangement of letters on the revised charts have also been changed from the original versions.
Revised logMAR charts, including this model, are not suitable for use in studies sponsored by the American National Eye Institute.
Key Features and Benefits
- Revised ETDRS logMAR test chart
- Ideal for carrying out visual acuity testing
- Designed for testing conducted at a 3 metre distance
- Each of the ten letters are presented at least once in each position
- Designed with a 30 metre to 1.5 metre acuity range
- Constructed to fit into specific Precision Vision illuminated cabinets
