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Snellen's Chart

  • By: Sarah Boslaugh
  • In: Encyclopedia of Global Health
  • Edited by: Yawei Zhang
  • Subject:Public Health (general), Public Health Education & Health Promotion

Snellen's chart is used to measure visual acuity by determining the level of visual detail that a person can discriminate. It was developed by the Dutch ophthalmologist Herman Snellen in 1854 and was adopted by medical professionals in many countries who ...

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