Snellen Eye Chart - Page 2
What is Snellen Eye Chart?
The Snellen Eye Chart is a tool used by eye care professionals to measure visual acuity. It is named after Dutch ophthalmologist Hermann Snellen, who developed the chart in 1862. The chart consists of multiple lines of letters or symbols, with each line decreasing in size. By reading the letters or identifying the symbols on the chart from a specific distance, an eye doctor can determine the sharpness of a person's vision.
What are the types of Snellen Eye Chart?
There are several types of Snellen Eye Charts available, each designed for specific purposes. The most common type is the standard Snellen Eye Chart, which is used to assess visual acuity at a distance of 20 feet. However, there are also charts available for testing near vision and for use with non-English-speaking individuals. Additionally, modern technology has allowed for the development of digital versions of the Snellen Eye Chart, which can be displayed on screens or printed out.
How to complete Snellen Eye Chart
Completing a Snellen Eye Chart requires the following steps:
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