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Vision Impairment Glasses
Vision Unit


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Levers in the Body


Activity 1A: Anatomy of the Human Eye


vision unit

Topic: Vision

Part of:
Unit: Challenges and Changes: Sensitivity to Vision & Hearing Compromises
Lesson: Anatomy of the Human Eye


Entire Activity Download (5 pages)


Individual Downloads

Anatomy of the Human Eye Labeled Teacher Handout

Anatomy of the Human Eye Unlabeled Student Worksheet

Glossary Student Handout


anatomy, function, anatomical defect

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Activity Description

Pass out the unlabeled line drawing of the eye to each student. Using the handout of the drawing have the students name the parts of the eye and label them on their picture. Ask the students to determine what the function is of each part of the eye. For each function, ask the students what vision problems might occur if there was a defect in each individual anatomic area.


Examples of Anatomic Sites, Associated Defects,
and Visual Problems
Anatomic Site Defect Visual Problem
Lens Becomes cloudy or opacified (cataract) Blurry or smudged vision
Cornea Scratched or abraded (usually from trauma) Pain, tearing, and obstructed vision
Extra-ocular muscles Paralyzed Double vision (diplopia)
Pupil and iris Paralyzed (this is what happens when an optometrist dilates the eye) Trouble focusing (accommodation)
Aqueous humor Increased pressure (glaucoma) Blind spots, that is, areas in visual field you can't see
Retina Tears or bleeds Blurry or lost vision
Macula Degenerates Loss of central vision