Skip Navigation
You are viewing an older version of this Concept. Go to the latest version.

Vision Problems and Corrective Lenses

Defects in the shape of the eye cause vision problems which can be corrected with lenses.

Atoms Practice
This indicates how strong in your memory this concept is
Practice Now
Turn In
Bionic Vision

Bionic Vision


Credit: National Eye Institute, National Institutes of Health
Source: http://en.wikipedia.org/wiki/File:Eye_disease_simulation,_age-related_macular_degeneration.jpg
License: CC BY-NC 3.0

Why is this picture so blurry? And why is there a large dark area in the middle? The picture is meant to simulate the vision of a person with an eye disease called macular degeneration.

Why It Matters

  • Macular degeneration is the most common cause of blindness in older Americans. It affects vision in the central part of the eye but not around the edges. It gradually worsens over time.
  • Recently, scientists developed a special telescopic contact lens that improves the vision of people with macular degeneration. Learn about this life-changing technology by watching this short video:


Can You Apply It?

At the link below, read more about macular degeneration and the telescopic contact lens. Then answer the questions that follow.

  1. How does the telescopic contact lens improve the vision of people with macular degeneration?
  2. The zoom function of the contact lens is always activated. How can it be switched off to change to normal (nonmagnified) vision?
  3. What are the advantages of the telescopic contact lens over other potential treatments for macular degeneration?
  4. What might be some other potential uses for specialized contact lenses such as those for macular degeneration?

Notes/Highlights Having trouble? Report an issue.

Color Highlighted Text Notes
Show More

Image Attributions

  1. [1]^ Credit: National Eye Institute, National Institutes of Health; Source: http://en.wikipedia.org/wiki/File:Eye_disease_simulation,_age-related_macular_degeneration.jpg; License: CC BY-NC 3.0

Explore More

Sign in to explore more, including practice questions and solutions for Vision Problems and Corrective Lenses.
Please wait...
Please wait...