A snellen chart is an eye chart that can be used to measure visual acuity Snellen charts are named after the dutch ophthalmologist herman snellen who developed the chart in 1862 as a measurement tool for the acuity formula developed by his professor franciscus cornelius donders [1][2] many ophthalmologists and vision scientists now use an. Test your vision with 3 different eye charts how the snellen chart works to use the snellen chart, stand 20 feet away and read the rows of letters, starting at the top and working your way to the bottom Do this while covering one eye and reading the chart with your uncovered eye. The snellen chart is the key tool used in the snellen test to assess visual acuity
It features a series of rows of capitalized letters, with the largest letters at the top and progressively smaller ones as you move down the chart. Visual acuity is your ability to see clearly and correctly The snellen eye test chart is the most common way providers test your vision during an eye exam. The snellen chart, also known as the eye test chart, is a standardised tool used by eye care professionals to measure visual acuity Named after its inventor, dutch ophthalmologist herman snellen, this chart has been a staple in eye clinics worldwide since its creation in 1862 Key features of the snellen chart design
Facts and history about the eye testing chart The most commonly used eye chart is known as the snellen chart It usually shows 11 rows of capital letters.
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