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Product 13951

By: The Flinn Staff

In the Astigmatism Laboratory Kit for anatomy and physiology bring the most common vision problem into clear focus and learn to identify and determine the cause of astigmatism using a set of realistic eye-test charts.

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Bring the most common vision problem, astigmatism, into clear focus! In this lab activity, students learn to identify and determine the cause of astigmatism using a set of realistic eye-test charts. The test charts allow students to detect corneal irregularities that cause blurry vision. Gray shadows appear next to solid black lines in the test charts when the shape of the cornea causes light rays to focus on different parts of the retina. Students are amazed that simple charts can give them “insight” into the shape of the eye. A great way to make science real! Complete for 30 students working in pairs.

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Planning and carrying out investigations
Analyzing and interpreting data

Disciplinary Core Ideas

MS-LS1.A: Structure and Function
HS-LS1.A: Structure and Function

Crosscutting Concepts

Patterns
Cause and effect
Structure and function

Performance Expectations

MS-LS1-3. Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.
HS-LS1-2. Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms.