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After Completion of this course the students will be able to:
CO 1: Understand techniques such as measurement of lens power, lens centration using conventional techniques. Transposition of various types of lenses.
CO 2: Identify different forms of lenses (equi-convex, plano convex, periscopic, etc.)
CO 3: Implement concept of final checking of finished spectacle with frame adjustments, delivery, and follow-up
CO 4: Develop lens verification and axis marking and fitting of all lens types
CO 5: Design basic optical concept for visual function
MODULE-I:
Fundamentals of Optics
MODULE-II:
Prisms and Their Applications
PRACTICE:
Prismatic effects
MODULE-III:
Lenses and Lensometry
PRACTICE:
Lensometry and Hand Neutralisation
MODULE-IV:
Transpositions and Prismatic Effects
PRACTICE:
Simple & toric transpositions;
MODULE-V:
Advanced Lens Concepts and Aberrations
PRACTICE:
Spherometer, edge thickness calculations;
Module I - 8 hrs (Demonstration before taking theory class)
Session-1
Introduction – Light - Through PPT - 2 hrs
Suggested reading:Optics-I by N.Subrahmanyam pg.no.4-8
Session-2
Introduction to reflection,mirrors and clinical application - 3 hrs
Suggested reading: Geometric and visual optics, pg.no.217-240
https://www.youtube.com/watch?v=CIWEJEYD-bg
Session-3
Reflection and Scattering - 3 hrs
Suggested reading:Geometric and visual optics, pg.no.15-28
https://www.youtube.com/watch?v=CIWEJEYD-bg
Assignment 1 -Write about the different properties of light and its applications in ophthalmic instruments
Reference Book:
Clinical Optics: T E Fannin & T Grosvenor, 2nd edition
Module II - 8 hrs
Session- 4
Prisms–Definition, properties, Refraction through prisms - 2 hrs
Suggested reading: Clinical Optics: T E Fannin & T Grosvenor, 2nd edition,pg.no.94-99;Geometrical and visual optics 149-163;
Optics and refraction:A.K.Khurana 19-22
Session-5
Prisms– Refraction through prisms - 2 hrs
Suggested reading: Clinical Optics: T E Fannin & T Grosvenor, 2nd edition,pg.no.94-99;Geometrical and visual optics 149-163;
Optics and refraction:A.K.Khurana 19-22
Session-6
Fresnel Prisms - 2 hrs
Suggested reading: Clinical Optics: T E Fannin& T Grosvenor, 2nd edition,pg.no.94-99;Geometrical and visual optics 149-163; Optics and refraction:A.K.Khurana 19-22
https://www.youtube.com/watch?v=y6bn__rnwj0&rco=1
Session-7
FP & Applications - 1 hr
Suggested reading: Clinical Optics: T E Fannin& T Grosvenor, 2nd edition,pg.no.94-99;Geometrical and visual optics 149-163;
Optics and refraction:A.K.Khurana 19-22
https://www.youtube.com/watch?v=y6bn__rnwj0&rco=1
Session-8
Risley prisms - 1 hr (Video clips)
Suggested reading:Clinical Optics: T E Fannin& T Grosvenor, 2nd edition,pg.no.120-122
https://www.youtube.com/watch?v=ZYA2yNEuTsk
Assignment 2 -Prisms and its applications in ophthalmic lenses
Reference Book:
Clinical Optics: T E Fannin& T Grosvenor, 2nd edition
Session - 8 Practice - Prismatic effects- Calculate the prismatic effect for spherical lenses -
06 hours - Dispensing Lab
Module III - 10 hrs
Session-9
Lenses – Definition, units, terminology used to describe, form of lenses - 1 hr
Suggested reading:Clinical Optics: T E Fannin& T Grosvenor, 2nd edition,pg.no.26-36; Ophthalmic lenses:A.J.Botra 26-40;
Optics and refraction,A.K.Khurana 220-223
https://www.youtube.com/watch?v=CJ6aB5ULqa0
Session-10
Vertex distance and vertex power, Effectivity calculations - 2 hrs
Suggested reading:Clinical Optics: T E Fannin& T Grosvenor, 2nd edition,pg.no.62-71; Optics and refraction,A.K.Khurana 220-226
https://www.youtube.com/watch?v=H2WSsOK-3Nc
Session-11
Effectivety calculations - 2hrs
Suggested reading:Clinical Optics: T E Fannin& T Grosvenor, 2nd edition,pg.no.62-71; Optics and refraction,A.K.Khurana 220-226
https://www.youtube.com/watch?v=H2WSsOK-3Nc
Assignment:3 -Vertex distance and analyze its relation with Myopes and Hyperopes
Session -12
Lens shape, size and types - 1 hr
Suggested reading:Clinical Optics: T E Fannin& T Grosvenor, 2nd edition,pg.no.26-36; Ophthalmic lenses:A.J.Botra 26-40;
Optics and refraction,A.K.Khurana 220-226;
System for ophthalmic dispensing:C.W.Brooks 287-292
https://www.youtube.com/watch?v=CJ6aB5ULqa0
Session: Presentations - Group A (Roll No 1,3&7) - Recent Advances in ophthalmic lenses
Session-13
Lens shape, size and types i.e. spherical - 2 hr
Suggested reading:Clinical Optics: T E Fannin& T Grosvenor, 2nd edition,pg.no.26-36; Ophthalmic lenses:A.J.Botra 26-40;
Optics and refraction,A.K.Khurana 220-226;
System for ophthalmic dispensing:C.W.Brooks 287-292
Session-14
Lens shape, size and types i.e. cylindrical and sphero-cylindrical - 2 hrs
Suggested reading:Clinical Optics: T E Fannin& T Grosvenor, 2nd edition,pg.no.26-36; Ophthalmic lenses:A.J.Botra 26-40;
Optics and refraction,A.K.Khurana 220-226;
System for ophthalmic dispensing:C.W.Brooks 287-292
https://www.youtube.com/watch?v=CJ6aB5ULqa0
Session 13- Practice - Dispensing Lab - Lensometry, hand neutralization- Calculate and analyze the lens power using lensometry and hand neutralization - 18 hours
Module IV - 8 hrs
Session-15
Transpositions – Simple - 1 hr
Suggested reading:Clinical Optics: T E Fannin & T Grosvenor, 2nd edition,pg.no.66-70; System for ophthalmic dispensing:C.W.Brooks pg.no.292-301
Session-16
Transpositions – Toric and Spherical equivalent - 1 hr
Suggested reading:Clinical Optics: T E Fannin & T Grosvenor, 2nd edition,pg.no.66-70; System for ophthalmic dispensing:C.W.Brooks pg.no.292-301
Assignment:4 - 100 examples for each type of transpositions
Session-17
Prismatic effect - 1 hr
Suggested reading:Clinical Optics: T E Fannin & T Grosvenor, 2nd edition,pg.no.97-120
https://www.youtube.com/watch?v=FO8e8ql62rQ
Session-18
Prismatic effect, centration, decentration and Prentice rule - 1 hr
Suggested reading:Clinical Optics: T E Fannin & T Grosvenor, 2nd edition,pg.no.97-120
Session-19
Prismatic effect of Plano-cylinder - 1 hr
Suggested reading:Clinical Optics: T E Fannin & T Grosvenor, 2nd edition,pg.no.97-120
Session-20
Prismatic effect of Plano-cylinder - 1hr
Suggested reading:Clinical Optics: T E Fannin& T Grosvenor, 2nd edition,pg.no.97-120
Session-21
Prismatic effect of sphero-cylinder lenses - 1 hr
Suggested reading:Clinical Optics: T E Fannin& T Grosvenor, 2nd edition,pg.no.97-120
Session: Presentations - Group B(Roll No 9&11) - Prismatic effect in Ophthalmic instruments
Session-22
Prismatic effect of sphero-cylinder lenses - 1 hr
Suggested reading:Clinical Optics: T E Fannin& T Grosvenor, 2nd edition,pg.no.97-120
Assignment:5 Prismatic effect and its application on various types of lenses
Reference Book - Clinical Optics: T E Fannin& T Grosvenor, 2nd edition,pg.no.97-120
Session - Practice - Dispensing Lab - Spherometer, edge thickness calculations- Calculate the edge thickness -10 hours
Module V - 12 hrs
Session-23
Spherometer - 1 hr
Suggested reading:System for ophthalmic dispensing C.W.Brooks chapter pg.no.308-333
Session-24
Spherometer & Sag formula - 1hr
Suggested reading:System for ophthalmic dispensing C.W.Brooks chapter pg.no.308-333
Session-25
Spherometer & Sag formula, Sagittal Depth - 1 hr
Suggested reading:System for ophthalmic dispensing C.W.Brooks chapter pg.no.308-333
Video: https://www.youtube.com/watch?v=kixoBFr-3xo
Session-26
Edge thickness calculations - 1hr
Suggested reading:System for ophthalmic dispensing C.W.Brooks chapter pg.no.308-333
Session-27
Edge thickness calculations, Sag depth - 1hr
Suggested reading:System for ophthalmic dispensing C.W.Brooks chapter pg.no.308-333
Session-28
Edge thickness calculations, Sag depth - 1 hr Checking of examples
Suggested reading:System for ophthalmic dispensing C.W.Brooks chapter pg.no.308-333
Session: Presentations - Group C (Roll No 2&4) - Spherometer
Session-29
Magnification in high plus lenses - 1 hr
Suggested reading:Clinical Optics: T E Fannin& T Grosvenor, 2nd edition,pg.no.179-186
Session-30
Magnification in high plus lenses - 1 hr - Checking examples
Suggested reading:Clinical Optics: T E Fannin& T Grosvenor, 2nd edition,pg.no.179-186
Session-31
Minification in high minus lenses - 1 hr
Suggested reading:Clinical Optics: T E Fannin& T Grosvenor, 2nd edition,pg.no.179-186
Assignment 6: Magnification and Minification with respect to the lenses, Give case studies
Session-32
Tilt induced power in spectacles - 1 hr
Suggested reading:Clinical Optics: T E Fannin& T Grosvenor, 2nd edition,pg.no.55-56; Optics and refraction:A.K.Khurana 1st chapter;Geometric and visual optics 15th chapter
https://www.youtube.com/watch?v=tNEWRk4jaNs
Session-33
Tilt induced power in ophthalmic lenses - 1hr
Suggested reading:Clinical Optics: T E Fannin& T Grosvenor, 2nd edition,pg.no.55-56; Optics and refraction:A.K.Khurana 1st chapter;Geometric and visual optics 15th chapter
Session-34
Tilt induced power in ophthalmic lenses - 1 hr
Suggested reading:Clinical Optics: T E Fannin& T Grosvenor, 2nd edition,pg.no.55-56; Optics and refraction:A.K.Khurana 1st chapter;Geometric and visual optics 15th chapter
https://www.youtube.com/watch?v=tNEWRk4jaNs
Session-35
Aberration in Ophthalmic Lenses -1 hr
Suggested reading:Geometric and visual optics:pg.no.176-186; Ophthalmic lenses:A.J.Botra pg.no.54-63
https://www.youtube.com/watch?v=vX_fCAszKT0
Session-36
Aberration in Ophthalmic Lenses - Longitudinal - 1 hr
Suggested reading:Geometric and visual optics:pg.no.176-186; Ophthalmic lenses:A.J.Botra pg.no.54-63
https://www.youtube.com/watch?v=vX_fCAszKT0
Session-37
Aberration in Ophthalmic Lenses - Coma - 1 hr
Suggested reading:Geometric and visual optics:pg.no.176-186; Ophthalmic lenses:A.J.Botra pg.no.54-63 visual optics:pg.no.176-186; Ophthalmic lenses:A.J.Botra pg.no.54-63
Session: Presentations - Group D (Roll No 6&10) - Article presentation on recent developments in eradications of ophthalmic aberrations
Session-38
Aberration in Ophthalmic Lenses - Spherical -1 hr
Suggested reading:Geometric and visual optics:pg.no.176-186; Ophthalmic lenses:A.J.Botra pg.no.54-63
Assignment 7 - Evaluate aberrations and its applications in various refractive errors
Reference book - Geometric and visual optics:pg.no.176-186; Ophthalmic lenses:A.J.Botra pg.no.54-63