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Vision Screening Using the Snellen Chart - Coggle Diagram
Vision Screening Using the Snellen Chart
What is a Snellen Chart?
Developed in 1862 by Herman Snellen
An eye chart used to
measure visual acuity
11 lines of block letters
Screening tool
If the child fails the screening, referral for further testing is needed
Where Snellen Screenings are performed?
Doctors office
School
Eye clinic
How to administer vision screening using a Snellen chart?
Supplies needed
Eye Occluder
Snellen Chart
Measuring Tape (20 feet)
Child stands 20 feet from chart
Cover/test
one eye at a time
Start on the 20/40 line
if unable to read proceed up :arrow_up:
If able to read, proceed down :arrow_down:
Click here for video demonstration
https://youtu.be/LuxeWX9ISu4
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Who gets screeened in the school setting?
Varies by State
Click here for Ohio guidelines
