While we may all wish that our eyesight was perfect, many people have vision that is faulty in some way. In this activity, you will look at how scientists study vision problems by learning about two different scientific experiments.


Listen to the Science Update, Reading Glasses, which addresses the question, "Why do some people have to wear reading glasses?"

View the two images below, showing what a person with normal vision sees compared to what a person with myopia, or nearsightedness, would see.

Images courtesy of National Eye Institute, National Institutes of Health
  • How do the images differ?
  • What tasks or activities might be difficult for a person who is nearsighted? Why?
  • How might someone with nearsightedness correct their vision problem?

You will read some scientific studies that examine possible causes for nearsightedness in children. In order to evaluate the research findings, it is important that you have a general understanding of what causes nearsightedness.

Read the following article and write a one paragraph summary: Myopia (Near-Sightedness)

In order to understand how scientists report their work to the public and to each other, read the following article: Why do scientists publish results of their work in scientific journals?

Knowledge Check

Which of the following statements do you agree with most?

  • Additional data in support of the hypothesis are needed before we can conclude that the use of nighttime lighting during infancy affects the development of myopia.

  • The researchers in the follow up studies have effectively proven that the use of nighttime lighting during the first two years of life has no effect on myopia. No further study is needed.

    Use evidence from what you have learned in this lesson to support your answer. Also, consider the reasons why scientists publish their research findings.

This esheet is a part of the Nearsightedness lesson.

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