Learning Problem
How a Basic Eye Test Can Miss a Learning Problem
Tuesday, November 30th, 2010
The Snellen chart doesn't test for critical vision problems.
Parents and children are quite familiar with the eye chart used by most schools for vision screenings. It’s called the Snellen chart, and it’s given us the term “20/20” vision.
Unfortunately, 20/20 vision only refers to acuity, which the Snellen chart helps measure. This eye test does not detect a wide range of other vision issues that can result in a learning problem.
Can the Snellen Chart Detect a Learning Problem?
Many vision screening tests performed in schools are confined to the Snellen chart. Developed in 1862 by the Dutch ophthalmologist Hermann Snellen, the chart is used to measure visual acuity, defined as the visual ability to resolve fine detail. (more…)
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