OPT200 - Applied Ophthalmic Optics

Outline info
Last revision date 2018-07-20 13:48:48.212
Last review date 2018-07-20 13:49:01.157

Subject Title
Applied Ophthalmic Optics

Subject Description

Building on the theory of physical and geometric optics, students explore the practical aspects of lens theory and applied optics.

Credit Status
One credit toward the Opticianry Diploma Program.

Learning Outcomes
Upon successful completion of this subject the student will be able to:

  1. Perform calculations to determine sphero-cylindrical lenses powers in various meridians and when combined. 
  2. Determine lens power using the lens gauge and apply formulas to calculate lens surface and nominal power.
  3. Analyze the effects of prism on the ophthalmic prescriptions and calculate the total prismatic effect
  4. Analyze the implications on vision of a lens when it is positioned at a different distance than refracted.
  5. Determine the implications of changes in position of wear and determine the lens power change when placed in a vertically tilted or wrapped-around frame.
  6. Discuss the effect of manifest over refraction and calculate the resultant power
  7. Analyze the effect of lens thickness on a pair of eyeglasses and perform calculations to determine center and edge thickness. 
  8. Discuss the effect of base curve and lens power on image magnification and calculate the total image magnification induced.
  9. Explain the implications of lens aberrations on vision.

Essential Employability Skills
Communicate clearly, concisely and correctly in the written, spoken and visual form that fulfils the purpose and meets the needs of the audience.

Respond to written, spoken, or visual messages in a manner that ensures effective communication.

Execute mathematical operations accurately.

Apply a systematic approach to solve problems.

Use a variety of thinking skills to anticipate and solve problems.

Locate, select, organize, and document information using appropriate technology and information systems.

Analyze, evaluate, and apply relevant information from a variety of sources.

Show respect for diverse opinions, values, belief systems, and contributions of others.

Interact with others in groups or teams in ways that contribute to effective working relationships and the achievement of goals.

Manage the use of time and other resources to complete projects.

Take responsibility for one's own actions, decisions, and consequences.

Cheating and Plagiarism
Each student should be aware of the College's policy regarding Cheating and Plagiarism. Seneca's Academic Policy will be strictly enforced.

To support academic honesty at Seneca College, all work submitted by students may be reviewed for authenticity and originality, utilizing software tools and third party services. Please visit the Academic Honesty site on http://library.senecacollege.ca for further information regarding cheating and plagiarism policies and procedures.

All students and employees have the right to study and work in an environment that is free from discrimination and/or harassment. Language or activities that defeat this objective violate the College Policy on Discrimination/Harassment and shall not be tolerated. Information and assistance are available from the Student Conduct Office at student.conduct@senecacollege.ca.

Accommodation for Students with Disabilities
The College will provide reasonable accommodation to students with disabilities in order to promote academic success. If you require accommodation, contact the Counselling and Disabilities Services Office at ext. 22900 to initiate the process for documenting, assessing and implementing your individual accommodation needs.

EAC150 - College English and OPT103 - Geometric Optics

It is the responsibility of each student to ensure the course prerequisites have been met.  Failure to do so may jeopardize your credit. 

Topic Outline

  •     Characteristics of ophthalmic lenses
  •     Base curve considerations
  •     Front and back vertex power
  •     Astigmatic imagery
  •     Hand neutralization
  •     Surface power and nominal power
  •     Lens aberrations
  •     Rx transposition
  •     Effective and compensated power
  •     Calculating power in various meridians
  •     Crossed cylinders not 90o apart
  •     Manifest over refraction
  •     Magnification and aniseikonic correction
  •     Prism and ophthalmic lenses
  •     Lens tolerances

NOTE:  A detailed weekly topic outline and test schedule will be distributed in the first class.

Mode of Instruction
 lecture, hands-on practice, group work, audio-visual presentations. 

Prescribed Texts
1. Practical Aspects of Ophthalmic Optics 4th ED,  M. Dowaliby
ISBN 0-7506-7189-0
2. Optical Formula Tutorials
2nd ED Ellen Stoner, Patricia Perkins;
 Butterworth-Heinemann  ISBN 0750675047

Reference Material
1.  System for Ophthalmic Dispensing, 3rd Ed,; Brooks and Borish, Butterworth-Heinemann

Promotion Policy

Grading Policy
A+ 90%  to  100%
A 80%  to  89%
B+ 75%  to  79%
B 70%  to  74%
C+ 65%  to  69%
C 60%  to  64%
D+ 55%  to  59%
D 50%  to  54%
F 0%    to  49% (Not a Pass)
EXC Excellent
SAT Satisfactory
UNSAT Unsatisfactory

For further information, see a copy of the Academic Policy, available online (http://www.senecacollege.ca/academic-policy) or at Seneca's Registrar's Offices.

Modes of Evaluation

Term Work 20% 
Mid Term Exam 30% 
Final Exam 50% 
Total  100% 

 Students must attain a minimum overall mark of 60% in order to pass this subject.  Failure to meet the above will result in a grade of "F".

Testing dates have been pre arranged and are non-negotiable. If a test is missed students are required to provide documentation, such as a doctor's
certificate in the case of illness, along with written request for make testing privileges within 7 days following the date of the test. Make-up examinations
will be granted for extenuating circumstances only at the discretion of the appropriate Faculty.

Expected English Competencies:
Since this is a professional credit subject, marking standards reinforce professional practice by demanding that all written work must demonstrate the following
characteristics for clarity and conciseness:

-       writing is consistent with the rules of English grammar
-       spelling and punctuation are correct
-       appropriate vocabulary used
-       sentences are structured correctly
-       work to flow logically through supporting statements
-       work to be arranged in correct format (i.e. reports, essays) 

Approved by: Lisa Somers