Module 16 

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Module 16:

Optics:

Physical, Geometric, and Physiologic

OVERVIEW

Estimated study time:  One hour.

Program Level:  Basic 

Target Audience:  OMPs with little or no knowledge of optics and more experienced OMPs wanting review.

Pre-requisites:  None

Date of original release:  March 7, 2003

Section 1:

Description of content:  This section discusses basic concepts of physical and geometric optics including: 

• theories of light

• the electromagnetic spectrum

• the visible spectrum

• terminology regarding the behavior of light

• refraction of light

• reflection

• prism optics

• spherical lens properties

• radius of curvature

• induced prism

Instructional  objectives:  Upon completion of  this section,  the student should be able to:

• name the theories of light

• rank wavelengths according to length

• define terminology relating to the behavior of light

• describe the behavior of light when it enters a prism

Section 2:

Description of content:  This section discusses basic concepts of physical and geometric optics including: 

• the optical anatomy of the eye

• spherical refractive errors

• astigmatism and cylindrical corrections

• the optical protractor

• transposing

• the spherical equivalent

• the optical cross

• types of astigmatism

• aspheric lenses

• image size

• apparent motion

• compounding and canceling prism

Instructional objectives:  Upon completion of this section,  the student should be able to:

• define terminology relating to the optical properties of the eye

• transpose a glasses prescription

• figure the spherical equivalent of a glasses prescription

• construct an optical cross from a prescription

• describe apparent motion

• identify compounding and canceling prism situations

About the Author: Gary Gallimore is a certified ophthalmic technologist who assists with research at the Eye Foundation of Kansas City and works for a large multi-specialty ophthalmology practice in the metro area of Kansas City.   He has taught CE courses for many years on all subjects of ophthalmic technology. 

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