Snellen Chart

A Snellen chart is a tool commonly used by eye care professionals to measure visual acuity. It consists of a series of rows of letters or symbols that decrease in size from top to bottom. The person being tested reads the letters aloud, starting with the largest ones at the top. Each row corresponds to a specific level of vision sharpness, commonly marked by a fraction like "20/20. It's widely used in clinical settings to assess if someone has normal vision or requires glasses or other vision correction methods.

Key Features

Large letters at the top:The top row has the largest letters, typically readable by people with poor vision.
Decreasing size: The letters get progressively smaller as you move down the chart.
Vision score: The 20/20 line represents normal vision, meaning the person can see at 20 feet what a normal person can see at that distance.
Positioning:The chart is typically placed 20 feet from the patient or, in smaller rooms, special mirrors may simulate this distance.

Snellen Chart

Key Features

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Snellen Chart

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Snellen Chart

Key Features

Headquarters

Regional Offices

Warehouses

Representatives