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Measure Your Ability to See

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    National Health Museum

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Measure Your Ability to See

In this exercise (Activity #2 on page), learners test their distance vision to evaluate their overall eyesight. Learners attempt to read the letters on a Snellen Eye Chart from 20 feet away, while covering one eye at a time. Learners consider what the results of this test say about their eyesight and how glasses improve vision. Note: This exercise is not meant to accurately measure learners' vision, and is not a substitute for professional vision analysis.

Quick Guide

Preparation Time:
Under 5 minutes

Learning Time:
5 to 10 minutes

Estimated Materials Cost:

Age Range:
Ages 8 - 18

Resource Types:
Activity, Lesson/Lesson Plan


Materials List (per group of students)


  • Life Sciences
    • Human Body
      • The Brain and Nervous System
    • Human Senses and Perception
      • Vision
      • Perception
  • Physical Sciences
    • Light and Optics
  • The Nature of Science
    • The Scientific Process
      • Conducting Investigations
      • Formulating Explanations


To use this activity, learners need to:

  • see
  • read
  • be mobile
  • touch

Learning styles supported:

  • Involves hands-on or lab activities


This resource is part of:

Access Rights:

  • Free access


  • Szaflarski, Ph.D., Diane M.


  • All Rights Reserved, Access Excellence @ the National Health Museum, ©2009


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