Snellen Tables

The Snellen chart is a table that is used to measure visual acuity in children and adults. It was developed by the Dutch ophthalmologist Snellen in 1860.

A table consists of a series of rows and columns containing letters or symbols of varying sizes. The patient should read the letters starting with the smallest ones and then move on to larger ones. If the patient cannot read the letter, then he needs to move to the next line.

There is a table for each age and each eye. For example, one table is used for children under 4 years old, another for children from 4 to 6 years old, and a third for adults.

Measuring visual acuity using the Snellen chart is an important tool for diagnosing and treating eye diseases. It allows you to determine how well a person sees and what measures need to be taken to improve vision.