OpenOptix ABO Study Guide - Laramy-K Optical

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DOCUMENT SPONSORS AND CONTRIBUTING AUTHORS ............................3 CHAPTER 1: OCCULAR ANATOMY ..................................................................6 Major Ocular Structures ............................................................................................................................. 6 Refractive Errors.......................................................................................................................................... 8 Extraocular Muscles................................................................................................................................... 11 CHAPTER 2: BASIC OPTICAL PRINCIPLES ...................................................13 Light and the Electromagnetic Spectrum................................................................................................. 13 Index of Refraction..................................................................................................................................... 14 Lens Power.................................................................................................................................................. 16 Prism............................................................................................................................................................ 16 Prism by Decentration ............................................................................................................................... 18 CHAPTER 3: LENS FORM ................................................................................19 Sphere.......................................................................................................................................................... 19 Cylinder....................................................................................................................................................... 22 Aspheric Lenses .......................................................................................................................................... 26 Transposing Prescriptions ......................................................................................................................... 29 CHAPTER 4: LENS OPTIONS...........................................................................30 Lens Materials ............................................................................................................................................ 30 Lens Material Properties Summary.......................................................................................................... 34 Principles of AR Coatings.......................................................................................................................... 35 Photochromic Lenses.................................................................................................................................. 36 Polarized Lenses ......................................................................................................................................... 37 This document is licensed under the Creative Commons Attribution 3.0 License. 7/30/2009 4
Scratch, UV, and Mirror Coatings............................................................................................................ 39 Multifocal Lenses........................................................................................................................................ 40 Progressive Addition Lenses...................................................................................................................... 43 Occupational Lenses................................................................................................................................... 49 Slab Offs...................................................................................................................................................... 51 Cataract Lenses .......................................................................................................................................... 53 CHAPTER 5: FRAMES ......................................................................................55 The Boxing System ..................................................................................................................................... 55 Frame Styles and Materials....................................................................................................................... 57 Frame Selection .......................................................................................................................................... 66 Fitting and Adjustment.............................................................................................................................. 76 CHAPTER 6: TOOLS .........................................................................................84 Lensometer.................................................................................................................................................. 84 Hand Tools and Instruments..................................................................................................................... 89 CHAPTER 7: REGULATIONS AND STANDARDS ...........................................94 Regulatory Agencies................................................................................................................................... 94 Standards Publications of Interest to Opticians ...................................................................................... 94 Impact Resistance Testing ......................................................................................................................... 98 Liability and Duty to Warn ....................................................................................................................... 98 DOCUMENT LICENSE.......................................................................................99 This document is licensed under the Creative Commons Attribution 3.0 License. 7/30/2009 5
Page 1 and 2: OpenOptix ABO Study Guide Ver. 1.3
Page 3: DOCUMENT SPONSORS AND CONTRIBUTING
Page 7 and 8: epithelium and Bowman’s Membrane
Page 9 and 10: Myopia Myopia, also known as near-s
Page 11 and 12: Anisometropia is a condition in whi
Page 13 and 14: Chapter 2: BASIC OPTICAL PRINCIPLES
Page 15 and 16: The straw seems to be broken, due t
Page 17 and 18: images seen by both eyes, so the ey
Page 19 and 20: Chapter 3: LENS FORM Sphere It can
Page 21 and 22: The corrective power of a lens is d
Page 23 and 24: Most prescriptions have some combin
Page 25 and 26: A lens measure has three points of
Page 27 and 28: Curve Eccentricity Circle e = 0 Ell
Page 29 and 30: Transposing Prescriptions Transpose
Page 31 and 32: Reflectance The reflectance of the
Page 33 and 34: Pros Thinner and lighter than glass
Page 35 and 36: Principles of AR Coatings As light
Page 37 and 38: lenses are finally available for sa
Page 39 and 40: ack surface of the lenses. While po
Page 41 and 42: n = index of the main lens n s = in
Page 43 and 44: To find the optical center of the s
Page 45 and 46: wider and less distorted making it
Page 47 and 48: seen as signatures which continue t
Page 49 and 50: Occupational Lenses In the broadest
Page 51 and 52: Basic impact lenses must: • Have
Page 53 and 54: Calculate a Slab Off Example: OD -5
Page 55 and 56:
The first multi-focal lens type we
Page 57 and 58:
Effective Diameter (ED) - Twice the
Page 59 and 60:
Nose pads: Nose pads are the small
Page 61 and 62:
Hinge: The hinge is the point where
Page 63 and 64:
Advantages of stainless steel frame
Page 65 and 66:
Plastics really have one general ca
Page 67 and 68:
We are often asked if the frames on
Page 69 and 70:
The last temple type was once calle
Page 71 and 72:
NO! This plastic frame makes very l
Page 73 and 74:
YES! In this figure the pads are ma
Page 75 and 76:
Secondary Frame Fitting Considerati
Page 77 and 78:
Frame Misalignment X-ing Skewed out
Page 79 and 80:
Temple Fit Ideally, the temples sho
Page 81 and 82:
Vertical angle - The angle of the p
Page 83 and 84:
Adjusting the endpieces is preferab
Page 85 and 86:
Part Identification 1. Eyepiece 7.
Page 87 and 88:
6. Eyeglass Table - The eyeglass ta
Page 89 and 90:
which should be documented along wi
Page 91 and 92:
Common Handtools for Frame Adjustme
Page 93 and 94:
Other Tools and Instruments Pupilom
Page 95 and 96:
(R2004) ANSI Z80.25 - 1996 (R2002)
Page 97 and 98:
Cylinder Power For Progressives Cyl
Page 99:
DOCUMENT LICENSE This work is licen
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