Web Links

Chapter 17 The Senses

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Web Activity: Corneal Surgery

Surgery for treating nearsightedness was first developed in Russia in the mid-1970s by Dr. Svyatoslav Fyodorov. He was inspired by a Russian teenager whose glasses had shattered during a fight, badly cutting his cornea. Remarkably, the eye healed and the boy's myopia seemed cured. An alteration of the cornea had corrected the myopia. Dr. Fyodorov soon developed a procedure called radial keratotomy for correcting myopia.

With the development of laser surgery in the early 1980s, new, less invasive, procedures were developed, including photorefractive keratotomy (PRK) and laser in-situ keratomileusis (LASIK). Find out how these procedures work. Also, investigate corneal ring implants and implantable contact lenses. What are the pros and cons of these two new procedures?

You may use these links to start your research.

PRK

LASIK

Corneal Ring Implants

Implantable Contact Lenses

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Career Connection: Audiologist

Audiologists work with people who have hearing, balance, and related ear problems. Employment opportunities are expected to grow rapidly-as the population ages, more people will have hearing problems. What type of work do audiologists do? Why is the work important? What academic requirements must be met?

U.S Department of Labour
This page provides information on working conditions and education requirements. Although the statistics are specific to the U.S. site, much of the information applies to Canadian audiologists.

CASLPA
The Web site of the Canadian Association of Speech-Language Pathologists & Audiologists offers information on certification requirements and career guidance.

ADVANCE for Audiologists
This is an on-line magazine for audiology professionals.

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Web Activity: Senses Challenge

Computer simulations provide insight into how the structures of the eye and ear are modified for specific functions. Simulations will show how the eye and ear provide valuable information about the external environment. Structural problems of the eye and ear provide incorrect sensory information and present problems in maintaining an internal balance.

Senses Challenge

Page 61

Section 17.3 Questions

10. In 1660, Robert Boyle discovered that sound cannot travel in a vacuum. Research and describe his famous experiment.

Mighty Chemist
This Web page outlines the many contributions of Robert Boyle to science, including those on the nature of sound.

Boyle's Experiments
This Web page provides information and images of Robert Boyle's experiments on the nature of sound.

12. Research motion sickness, including its probable causes and some current solutions. You can begin your research on the Internet.

Motion Sickness
In the menu under 'Info Brochures', and then 'Ear Brochures', is an excellent description of Motion Sickness, its causes, and suggestions for treatment.

What Causes Motion Sickness?
What Causes Motion Sickness? This is one of the questions answered on this Web page, posted by a company that sells a natural remedy for the condition.

A Patch for Motion Sickness
This Web site was created by a company that sells A Patch for Motion Sickness. Good descriptions of what causes motion sickness and what to do about it accompany an explanation of how the patch works.