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A Snellen chart is an eye chart used to measure visual acuity by reading letters of different sizes. Learn about the history, description, and variation of Snellen charts, and how they are used to express visual acuity as fractions or ratios.
Use this calculator to test your visual acuity using a Snellen chart on a mobile device. Follow the instructions and select the lowest line that you can read correctly.
12 Οκτ 2021 · Learn about the Snellen chart, the most common method to measure visual acuity during eye exams. Find out how to use it, what it means and download a printable version for home testing.
24 Σεπ 2024 · Learn how to use printable eye charts to assess your vision at home. Find out the history, structure, and types of eye charts, including the Snellen chart and its variants.
29 Δεκ 2023 · Snellen and other well-known eye charts are used to measure visual acuity, which refers to how well you can see without glasses or contacts. The results are used to determine if you need eyewear to correct your vision. It's part of a general assessment of your overall eye health.
1 Μαΐ 2023 · Invented in 1862 by a Dutch ophthalmologist named Herman Snellen, the Snellen chart remains the most widespread technique in clinical practice for measuring visual acuity. [1] [2] The Snellen chart serves as a portable tool to quickly assess monocular and binocular visual acuity.
4 Μαρ 2022 · Learn how the Snellen eye chart measures your visual acuity and how it was developed by Dutch eye doctor Hermann Snellen in the 1860s. Find out when and why you should get an eye exam and what other types of eye charts are available.
