What Causes Blindness?
It might creep in without you even noticing. One day, you'll look around and things seem a bit...blurry. Don't worry, you are not alone. Most people have difficulty seeing clearly and must use glasses or contact lenses. This includes many older people as well. This is because their eye muscles do not work as well as they use to and cannot focus light into their eyes correctly.
What Does it Mean to Be Blind?
A lot of people think being blind means you live in a world of darkness. But that isn't always the case. Some people who can't see very well cannot use glasses to correct their vision – glasses won't help. Even if they are not completely blind, these people are referred to as Legally Blind.
What Causes Blindness?
Additional images via Wikimedia Commons. Refraction through glasses by Hackfish.
Read more about: How Do We See?
Bibliographic details:
- Article: What Causes Blindness?
- Author(s): Dr. Biology
- Publisher: Arizona State University School of Life Sciences Ask A Biologist
- Site name: ASU - Ask A Biologist
- Date published: 1 Jul, 2015
- Date accessed:
- Link: https://askabiologist.asu.edu/what-causes-blindness
APA Style
Dr. Biology. (Wed, 07/01/2015 - 15:19). What Causes Blindness?. ASU - Ask A Biologist. Retrieved from https://askabiologist.asu.edu/what-causes-blindness
Chicago Manual of Style
Dr. Biology. "What Causes Blindness?". ASU - Ask A Biologist. 01 Jul 2015. https://askabiologist.asu.edu/what-causes-blindness
MLA 2017 Style
Dr. Biology. "What Causes Blindness?". ASU - Ask A Biologist. 01 Jul 2015. ASU - Ask A Biologist, Web. https://askabiologist.asu.edu/what-causes-blindness
Some people need to use glasses to see things clearly.
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