What is ETDRS?
What is ETDRS? Well the acronym stands for Early Treatment of Diabetic Retinopathy Study. What is Diabetic Retinopathy? It is when diabetic patients have high blood sugar that can cause damage to blood vessels in the retina. Ways to test for this disease is through contrast sensitivity and acuity measurement. The most efficient and accurate charts for these tests are formatted using the "Logarithm of the Minimum Angle of Resolution", or LogMAR. This formatting is what gives an eye chart that unmistakeable 'V' shape as the lines get smaller on a chart.
Because of the efficiency resulting from this type of formatting, these kinds of charts have become the gold standard for contrast and acuity measurement. Over the years, this type of formatting has simply become known as 'ETDRS Charts'.
Good-Lite is the leading producer of LogMAR charts in the world. Because we use the screen printing method, our charts are of the highest quality, producing the clearest opto types, especially with the very small lines. In addition, we print on styrene, which is a very durable, easily cleanable material that will last for years.
Visit our wide range of ETDRS Charts and find the right chart for your practice today.