![Why the Snellen Chart Fails with Certain Vision Problems](https://www.thevisiontherapycenter.com/hs-fs/hub/91892/file-15965738-jpg/images/teegardin_eyechart-resized-600.jpg#keepProtocol)
Why the Snellen Chart Fails with Certain Vision Problems
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The Snellen Chart, often used in vision screening, can miss key vision problems.
![https://upload.wikimedia.org/wikipedia/commons/c/c0/Vision_Of_Eyechart_With_Glasses_%285547069087%29.jpg](https://upload.wikimedia.org/wikipedia/commons/c/c0/Vision_Of_Eyechart_With_Glasses_%285547069087%29.jpg)
File:Vision Of Eyechart With Glasses (5547069087).jpg - Wikimedia Commons
![https://images.squarespace-cdn.com/content/v1/61fc5a1052cb9831decbcad9/e5f82f68-5c91-42d8-9e4b-88e5f207a3e2/snellen-eye-acuity-chart.png](https://images.squarespace-cdn.com/content/v1/61fc5a1052cb9831decbcad9/e5f82f68-5c91-42d8-9e4b-88e5f207a3e2/snellen-eye-acuity-chart.png)
Is 20/20 Vision Good? ® — The Eye Care Institute, LASIK Experts
![https://c8.alamy.com/comp/2H4FW6D/flat-ophthalmologist-check-eyesight-with-eye-test-chart-and-eyeglasses-woman-oculist-with-pointer-measure-visual-acuity-doctor-diagnose-ophthalmic-problem-in-hospital-ophthalmic-exam-concept-2H4FW6D.jpg](https://c8.alamy.com/comp/2H4FW6D/flat-ophthalmologist-check-eyesight-with-eye-test-chart-and-eyeglasses-woman-oculist-with-pointer-measure-visual-acuity-doctor-diagnose-ophthalmic-problem-in-hospital-ophthalmic-exam-concept-2H4FW6D.jpg)
Flat ophthalmologist check eyesight with eye test chart and eyeglasses. Woman oculist with pointer measure visual acuity. Doctor diagnose ophthalmic problem in hospital. Ophthalmic exam concept Stock Vector Image & Art
![https://www.aoa.org/AOA/Images/Patients/Eye%20Conditions/Astigmatism.jpg](https://www.aoa.org/AOA/Images/Patients/Eye%20Conditions/Astigmatism.jpg)
Astigmatism
![https://cdn.wionews.com/sites/default/files/styles/story_page/public/2023/02/02/329809-common-eye-disorders-and-diseases.png](https://cdn.wionews.com/sites/default/files/styles/story_page/public/2023/02/02/329809-common-eye-disorders-and-diseases.png)
Expert reveals why some people suffer from distorted vision while driving - Lifestyle News
![http://webvision.med.utah.edu/wp-content/uploads/2018/05/KallSpat1.jpg](http://webvision.med.utah.edu/wp-content/uploads/2018/05/KallSpat1.jpg)
Visual Acuity by Michael Kalloniatis and Charles Luu – Webvision
![https://pbs.twimg.com/media/E88tijLXsAEhSEx.jpg](https://pbs.twimg.com/media/E88tijLXsAEhSEx.jpg)
Prevent Blindness TX on X: Q: What is the difference between a vision screening & an #EyeExam? A: A vision screening can only reveal a possible vision problem not diagnose it. During
![https://valleyopt.com/wp-content/uploads/2020/05/iStock-697248424_edited-1-1024x1024.jpg](https://valleyopt.com/wp-content/uploads/2020/05/iStock-697248424_edited-1-1024x1024.jpg)
Comprehensive Eye Exams - Valley Optometry
![https://www.aafp.org/content/dam/brand/aafp/pubs/afp/issues/1998/0901/p691-f4.jpg](https://www.aafp.org/content/dam/brand/aafp/pubs/afp/issues/1998/0901/p691-f4.jpg)
Pediatric Vision Screening for the Family Physician
![https://images.ctfassets.net/u4vv676b8z52/eb1PPyx9P1PPdkZkhcXV6/a60d69d581c8d5f070db0e68ab3090d8/cataract-illustration-678x446.gif?fm=jpg&q=80](https://images.ctfassets.net/u4vv676b8z52/eb1PPyx9P1PPdkZkhcXV6/a60d69d581c8d5f070db0e68ab3090d8/cataract-illustration-678x446.gif?fm=jpg&q=80)
Cataracts
![https://www.publichealthdegrees.org/wp-content/uploads/sites/53/2021/09/10359_Eye-Health-and-Women_bar-chart.png](https://www.publichealthdegrees.org/wp-content/uploads/sites/53/2021/09/10359_Eye-Health-and-Women_bar-chart.png)
Women's Health: Tips for Vision Care
![https://d3i71xaburhd42.cloudfront.net/db805d0e520c9be0f8ebd83ad1f571ca353d3bfb/2-Table1-1.png](https://d3i71xaburhd42.cloudfront.net/db805d0e520c9be0f8ebd83ad1f571ca353d3bfb/2-Table1-1.png)
PDF] Refractive Error, Visual Acuity and Causes of Vision Loss in Children in Shandong, China. The Shandong Children Eye Study
Vision Screening of Preschool Children: How To Check on Visual Acuity and Heterophoria as Part of a Routine Physical Examination - Marie Scott Brown, 1975