OPT307 - Eyeglass Dispensing Lab II

Outline info
Last revision date 2017-05-29 00:26:04.137
Last review date 2017-07-17 00:15:00.585

Subject Title
Eyeglass Dispensing Lab II

Subject Description

This subject emphasizes procedures for fitting and dispensing high lens powers, bifocal and multifocal lens designs and consolidates knowledge and skills learned in previous professional subjects. Advanced fitting techniques, Rx interpretation and professional standards are included.

Credit Status

One credit toward the Opticianry Diploma Program

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

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

1. Neutralize multifocal lenses and spectacles as well as those with prism.
2. Identify special design lenses based on material, composition, and

3. Take advanced fitting measurements including vertex distance measurement

and multifocal segment placement.
4. Select appropriate lenses and frames based upon the RX requirements, client

history and measurements taken.
5. Verify that prescription ophthalmic lenses meet ANSI standards.
6. Deliver finished spectacles to the client, verifying requirements and perform

client teaching.
7. Discuss procedures to follow when replacing a single lens in the patient's

eyeglasses including the measurement and matching of lens parameters to

ensure maximum visual comfort.

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.

OPT106 and OPT204

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

Topic Outline

  •     Review of procedures for single vision lenses.  Disinfection of tools and instruments.  Introduction to bifocal neutralization.
  •     Neutralization of high lens power.
  •     Neutralizing prism.
  •     Neutralizing progressive lenses
  •     Advanced fitting measurements; vertex distance measurement
  •     Lens verification and delivery
  •     ANSI standards for prescription ophthalmic lenses
  •     Specialty lens identification; Rx interpretation
  •     Advanced fitting measurements
  •     Frame selection for specialized fitting
  •     Fresnel prisms

Mode of Instruction
 Lectures, hands-on practice, and group work. 

Prescribed Texts


System for Ophthalmic Dispensing

3rd Ed, Brooks& Borish;

Butterworth-Heinemann ISBN 0750674806








Reference Material

Required Supplies

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
Because of the nature of this subject, attendance in all classes is mandatory in order to achieve the learning outcomes.  Any absences must be supported by a
legal document within one week.  Any student who fails to attend more than 2 scheduled classes will not pass this subject.

The final grade for this course will be designated as follows:


** Lensometer portion must be satisfactory (80%) to pass this subject.

** Bench Alignment portion must be satisfactory (70%) to pass this subject.

Composite Grading Scheme:  

Assignment 1  10%
Assignment 2  10% 
Assignment 3 10% 
Verification 20%
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 "UNSAT".

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
stating the illness, along with a written request for a make-up 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. 

Approved by: Lisa Somers