Discovering Vision Therapy Blog

How a Basic Eye Test Can Miss a Vision Problem


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.

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Topics: Snellen Eye Chart, Functional Vision Test

The Snellen Chart Can Help in the Detection of Amblyopia


We write often of the shortcoming of the Snellen chart when it comes to detecting vision problems such as poor binocular skills, or strabismus.  However, the Snellen chart does work well for the detection of amblyopia, or lazy eye.

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Topics: Amblyopia (Lazy Eye), Snellen Eye Chart

What the Snellen Chart Misses


A Snellen Chart is the iconic rows of letters used by most optometrists to gauge a person’s acuity, or ability to focus.  But it’s only one part of a Functional Vision Test, and overlooks (pardon the pun) critical testing that can pinpoint vision problems. 

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Topics: Snellen Eye Chart

Watch Out: Vision Problems Missed by the Snellen Chart

The Snellen chart is commonly used in eyesight screenings to measure visual acuity.  However, it’s profoundly lacking in detecting functional vision problems, which can ultimately lead to a child’s struggles in school.

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Topics: Snellen Eye Chart

Why the Snellen Chart Fails with Certain Vision Problems

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Topics: Functional Vision Problems, Visual System, Snellen Eye Chart