OPT308 - Visual Assessment and Refractometry

Outline info
Last revision date 2018-04-11 08:29:05.586
Last review date 2018-04-11 08:29:16.034

Subject Title
Visual Assessment and Refractometry

Subject Description
Students are introduced to the primary care procedures used to detect anomalies of the refractive and health systems of the eye. An exploration of the types, etiology, testing and treatment of eye abnormalities and clinical techniques used to detect visual error is included.

Credit Status
One credit subject toward the Opticianry Diploma.

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. Demonstrate effective interpersonal and communication skills
  2. Discuss the historical background, prevalence and distribution of ametropia and corrective lens use.
  3. Describe the symptoms and clinical presentation of refractive anomalies.
  4. Analyze the characteristics of normal binocular vision and reflex and voluntary motor systems of the eye.
  5. Describe the testing protocol and procedures for the primary eye examination.
  6. Describe the requirements for taking patient history and preliminary assessment.
  7. Describe clinical procedures to test binocular vision and accommodation.
  8. Describe clinical procedures for the objective and subjective examination.
  9. Exercise judgement to practice within the regulations for opticians.

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.

OPT205 / OPT300

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

Topic Outline

  •     History and prevalence of ametropia
  •     Anomalies of refraction
  •     Amplitude and range of accommodation
  •     Binocular vision and the binocular vision exam
  •     The ocular health exam
  •     The binocular examination
  •     The objective examination
  •     The subjective examination
  •     Age related vision impairment

** A detailed weekly topic outline and test schedule will be provided by the instructor.

Mode of Instruction
Classroom lectures integrated with regular problem solving tutorial sessions. 

Prescribed Texts
Clinical Procedures in Primary Eye Care, 3rd Edt
David B. Elliott; Elsevier

Reference Material
Fundamentals for Ophthalmic Technical Personnel; B. Carson; W.B. Saunders 

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
In the Seneca College Health Sciences Programs, a minimum grade of "C' (60%) is required for Promotion. 

Quizzes 30%
Mid-term examination 30%
Final Exam  40%
Total    100%

Students must score a minimum "C' (60%) on the final exam in order to pass this subject.

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,
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 instructor.  


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 is used
    Sentences are structured correclty
    Work flow logically through supporting statements
    Work to be arranged in correct format (i.e. reports and essays


Using another's ideas as one's own, as well as copying directly from books, magazines, reports, and other sources, without acknowledgement is plagiarism.
Cheating and plagiarism constitute unacceptable behaviour.  Such offenses occur when a student violates the procedures governing the administration of
examinations, tests or other means of evaluating student achievement in a subject or program.

A promotion meeting will be convened to review alleged instances of cheating and plagiarism.

The minimum penalty for a first offense during a student's attendance at the College will be loss of credit of the evaluation involved or a more stringent
penalty consistent with the circumstances.

A second offense may result in the immediate explusion of the student from the College for the remainder of the current academic semester and two
subsequent academic semesters.

Where there is sufficient evidence to assess a penalty, all relevant information will be maintained in the student's file.  The student has the right to appeal
the decision of the College, consistent with academic policy. 

Approved by: Lisa Somers