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Farsightedness HTML5


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.

Click on the image of the eye to label the parts.

Click and drag the candle along the optic axis.

Click on 'lens' to add the lens.

Learning goals

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

Learn more

For a « normal » eye – that is, one without any vision defects, the image of an observed object is focused on the retina, regardless of the distance of the object. This is made possible by the…

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