Farsightedness

Ages

Introduction

Summary

Pedagogical animation of the hyperopic eye. Hyperopia or farsightedness is a condition where the eye is too short in relation to its refractive power. The light rays intersect behind the retina.

The corrective lens modifies the focal to shift the point of intersection to the surface of the retina. We also show that correction moves the "near point" closer to the eye.

You can click and drag the object to move it along the optic axis.

Diagrams are not drawn to scale.

Goals

• To understand the vision process.
• To illustrate how a lens can correct  farsightedness.

Features

Click and drag the object along the optic axis.

Click on to add the lens.

Student sheet

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Tags

hypermetropia Crytalline-lens correction eye lens near-point image retina glass hyperopic hyperopia farsightedness