Snellen chart was created in 1862.
snellen chart
jaeger chart
The Snellen chart is used to measure visual acuity (how clearly a person can see). for more: nsda.gov.bd
Dr. Hermann snellan is the doctor that invented the snellen eye chart.
Typically, the eye chart is the Snellen chart.
Snellen chart
Snellen Chart
The largest letter on the Snellen eye chart is usually the letter E at the top of the chart.
8.73 mm
20 feet
20:20 vision
A test chart is a chart that shows the results of a given competition or event. There are various types of test charts namely the Snellen Chart and the USAF resolution test chart.