Snellen chart

noun

Snel·​len chart ˈsnel-ən- How to pronounce Snellen chart (audio)
: the chart used in the Snellen test with black letters of various sizes against a white background

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“Snellen chart.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Snellen%20chart. Accessed 24 Apr. 2024.

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