Apr 25, 2024  
2020-2021 Course Catalog 
    
2020-2021 Course Catalog [ARCHIVED CATALOG]

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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
  1. Review mathematical principles
    1. Solve positive/negative number problems
    2. Solve simple algebraic equations
    3. Perform metric conversions
  2. Investigate the principles of light
    1. Examine electromagnetic light spectrum
    2. Explore the laws of reflection and solve simple reflection problems
    3. Analyze Snell’s Law of Refraction
    4. Discuss index of refraction and solve simple refraction problems
  3. Analyze refraction of multiple light rays
    1. Examine different distortions found in lenses
    2. Explore concept of pantoscopic tilt
    3. Analyze lens designs to correct distortions
    4. Solve simple vergence problems
  4. Explore curved refracting surfaces
    1. Differentiate between convex and concave curvatures
    2. Distinguish between spherical and cylindrical lenses
    3. Perform hand neutralization of concave and convex lenses
    4. Measure front and back lens surfaces with a lens clock.
  5. Analyze lens formulas
    1. Transpose plus to minus lens formula and vice versa
    2. Draw a power cross from a lens formula
    3. Calculate a lens formula from a power cross
    4. Solve power cross problems
  6. Investigate optical properties of the eye
    1. Examine the function of the eye
    2. Explore the optical properties of the eye
    3. Identify refractive errors including emmetropia, hyperopia, myopia, astigmatism, presbyopia, aphakia, pseudophakia
    4. Describe types of optical correction for refractive error correction
  7. Examine and practice using a lensometer
    1. Identify parts of a manual lensometer
    2. Practice focusing eyepiece
    3. Explain the difference between the optical center of a lens and the geometric center of a lens
    4. Identify the major reference point of a lens
    5. Examine the power adjustment of the lensometer
  8. Analyze and practice neutralization of lenses
    1. Determine power of spherical, spherocylindrical and multifocal lenses
    2. Mark optical center of above lens types using a lensometer.
    3. Measure the distance between optical centers of the three lens types
    4. Measure the distance between near optical centers of multifocal lenses.
  9. Analyze accepted lens tolerances and standards
    1. Determine a lens base curve
    2. Calculate minimum lens thickness.
    3. Apply ANSI standards chart
    4. differentiate between neutralization and verification
    5. Differentiate methods of hardening glass lenses
    6. Explain the drop ball test
    7. Explore FDA lens requirements for dress and safety lenses
  10. Analyze prism power and practice neutralization of prism power
    1. Explore the uses of prism in lenses
    2. Measure horizontal and vertical prism using lensometer
    3. Explore concepts of decentration and jump.
    4. Identify prismatic effect and vertical imbalance
  11. Demonstrate verification of lenses
    1. Verify lens orders using lensometer
    2. Apply ANSI standards
    3. Calculate induced prism



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