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  • Color Blindness Special Needs Factsheet for Educators

    What teacher should know about color blindness and how to help students who have it.

  • Teacher's Guide: Vision (Grades 6 to 8) for Educators

  • Teacher’s Guide: Vision (PreK to Grade 2) for Educators

  • Eyes for Teens

    Although your eyes are small, their structure is incredibly complex. Find out how they work in this body basics article.

  • Eyes for Parents

    The eyes are small compared with most of the body's other organs, but their structure is incredibly complex. Learn more about eyes, vision, and common problems with both.

  • Teacher's Guide: Vision (Grades 9 to 12) for Educators

  • Word! Cone for Kids

    Cones are tiny cells in the back of the eye that are sensitive to light and help you see.

  • Visual Impairment for Teens

    When one or more parts of the eye or brain that are needed to process images become diseased or damaged, severe or total loss of vision can occur. Read all about visual impairment.

  • Quiz: Vision (Grades 9 to 12) for Educators

    This quiz is part of the Teacher's Guide on Vision for grades 9 to 12.

  • Albinism for Teens

    Humans, animals, and even plants can have albinism, a condition that gives people a kind of pale appearance. Find out more about albinism here.