Precision Vision 2.5-Metre ETDRS LogMAR Chart (Original R Chart)
The Precision Vision 2.5-Metre ETDRS LogMAR Chart (Original R Chart) is a test type designed for evaluating low-vision and near-distance visual acuity. This standardised test type is also ideal for use during clinical studies, and offers accurate and repeatable results. Those who may find this chart particularly useful include optometrists, doctors, and vehicle licensing agencies.
What's Included?
What Is the Function of a LogMAR Chart?
LogMAR charts, or ETDRS charts, are designed for use as an assessment tool for eyecare professionals to measure a patient's level of vision and visual acuity. The chart enables opticians, optometrists, doctors, and vehicle licensing agencies to determine to assess clarity of the patient's near-distance vision.
Key Features and Benefits
- ETDRS logMAR test type
- Ideal for assessing a patient's visual clarity and acuity level
- For testing near-distance visual acuity at a distance of 2.5 metres
- Suitable for use by optometrists, doctors, and vehicle licensing agencies
- Acuity range of 25.2 - 1.2 metres
- Standardised format is acceptable for studies conducted by the American National Eye Institute
- Suitable for conducting low-vision tests
- Provides accurate and repeatable results
- Lines are of equal difficulty, and decrease in size further down the page
- Constructed to fit into specific Precision Vision illuminated cabinets
Original Versus Revised ETDRS Charts
The original ETDRS logMAR charts are the only standardised choice for studies sponsored by the American National Eye Institute, and so are the preferred option for clinical studies, low vison evaluations, and gathering repeatable visual acuity measurements. The revised charts offer a different scoring system, and a different arrangement of the included letters.
Alternative Eye-Test Charts
For an alternative 2.5 metre logMAR test type with a revised design, check out the great alternatives below:
