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Apr 25, 2024
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OPT 120 - Basic Optical Concepts/Optics Credits: 3 Lecture Hours: 2 Lab Hours: 2 Practicum Hours: 0 Work Experience: 0 Course Type: Voc/Tech This course covers the properties of light and the function of a lens in vision correction. This course begins the study of the neutralization and verification of spectacle lens powers, to include spherical, cylindrical and prism lenses. Competencies
- Review mathematical principles
- Solve positive/negative number problems
- Solve simple algebraic equations
- Perform metric conversions
- Investigate the principles of light
- Examine electromagnetic light spectrum
- Explore the laws of reflection and solve simple reflection problems
- Analyze Snell’s Law of Refraction
- Discuss index of refraction and solve simple refraction problems
- Analyze refraction of multiple light rays
- Examine different distortions found in lenses
- Explore concept of pantoscopic tilt
- Analyze lens designs to correct distortions
- Solve simple vergence problems
- Explore curved refracting surfaces
- Differentiate between convex and concave curvatures
- Distinguish between spherical and cylindrical lenses
- Perform hand neutralization of concave and convex lenses
- Measure front and back lens surfaces with a lens clock.
- Analyze lens formulas
- Transpose plus to minus lens formula and vice versa
- Draw a power cross from a lens formula
- Calculate a lens formula from a power cross
- Solve power cross problems
- Investigate optical properties of the eye
- Examine the function of the eye
- Explore the optical properties of the eye
- Identify refractive errors including emmetropia, hyperopia, myopia, astigmatism, presbyopia, aphakia, pseudophakia
- Describe types of optical correction for refractive error correction
- Examine and practice using a lensometer
- Identify parts of a manual lensometer
- Practice focusing eyepiece
- Explain the difference between the optical center of a lens and the geometric center of a lens
- Identify the major reference point of a lens
- Examine the power adjustment of the lensometer
- Analyze and practice neutralization of lenses
- Determine power of spherical, spherocylindrical and multifocal lenses
- Mark optical center of above lens types using a lensometer.
- Measure the distance between optical centers of the three lens types
- Measure the distance between near optical centers of multifocal lenses.
- Analyze accepted lens tolerances and standards
- Determine a lens base curve
- Calculate minimum lens thickness.
- Apply ANSI standards chart
- differentiate between neutralization and verification
- Differentiate methods of hardening glass lenses
- Explain the drop ball test
- Explore FDA lens requirements for dress and safety lenses
- Analyze prism power and practice neutralization of prism power
- Explore the uses of prism in lenses
- Measure horizontal and vertical prism using lensometer
- Explore concepts of decentration and jump.
- Identify prismatic effect and vertical imbalance
- Demonstrate verification of lenses
- Verify lens orders using lensometer
- Apply ANSI standards
- Calculate induced prism
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