Siirry suoraan sisältöön

Silmien yhteisnäkö (10 cr)

Code: SX00DS04-3002

General information


Enrollment

30.11.2020 - 13.12.2020

Timing

01.01.2021 - 14.03.2021

Number of ECTS credits allocated

10 op

Mode of delivery

Contact teaching

Unit

Kuntoutus ja tutkiminen

Campus

Myllypurontie 1

Teaching languages

  • Finnish

Degree programmes

  • Optometrian tutkinto-ohjelma

Teachers

  • Johanna Valtanen
  • Anna Junnikkala
  • Kajsa Sten

Teacher in charge

Kajsa Sten

Groups

  • SXE20K1
    Optometrian tutkinto-ohjelma päivä

Objective

Knowledge base
Students are able to
• explain the principles of binocular vision and anatomical foundations for it
• describe significance of binocularity to vision and its development in childhood.
• distinguish binocular vision disorders and describe the factors causing them, symptoms and treatments
• distinguish accommodation disorders and describe the factors causing them, symptoms and treatments
• describe the principals of the tests of the binocular vision and accommodation
• assess normality of the test values of binocular vision and accommodation
• calculate the corrective prism and spherical dioptric correction to control accommodative convergence
• Students are able to use optometry-related resources in English. They are able to present their optometric knowledge in English, both verbally and in writing. They are able to guide the customer in vision-related issues in English. Their verbal and written communication skills correspond to the skill level B2 of the Common European Framework of Reference for Languages.

Clinical/practical base
Students are able to
• assess near vision and function of the accommodation
• assess extra ocular muscle balance, measure phorias and vergences
• assess binocular vision, fixation disparity, stereo acuity
• record the test results with understandable and agreedable notation (KANTA, ICD10)

Content

Binocular vision
• function and significance (pros and cons) to vision
• oculocentric and egocentric perception
• sensoric and motoric fusion and its development
• corresponding points
• horopter and Panum´s fusional area
• physiological diplopia
• crossed and uncrossed physiological diplopia
• summation
• dominant eye
o sight and direction
• binocular rivarly
• supression, alternate vision, diplopia, confusion
binocular vision disorders
• epidemiology
• symptoms
• mechanism
examination of phoria
• cover test and prism bar
• dissociation tests
• association tests
fixation disparity and testing
• definition, etiology, symptoms, examination (Mallet, Wesson card)
stereo acuity
• depth perception
• monocular and binocular clues
• retinal disparity
• stereoacuity and its development
• stereo tests and testing (TNO ja Titmus)
accommodation and testing
• accommodative amplitude
• accommodative flexibility
• accommodative response (lag)
o MEM ja Nott
• positive and negative accommodation (PRA/NRA)
vergence tests
• positive and negative vergence (PRK/NRK)
• AC/A
o gradient
o formula
heterophoria and vergences
• classification
• etiology
• symptoms
• tests and procedure (Krimsky, Maddox cylinder, Von Graeffe, Schober, Hirsberg/Krimsky, fusional reserves NRK/PRK and supra/infra
• convergence excess
• convergence insufficiency
• divergence excess
• divergence insufficiency
• basic eso/exophoria
• treatment
o Sheard ja Percival
o spherical power lens to control accommodative convergence
accommodative disorders
• classification
• etilogy
• symptoms
• tests and procedure
• accommodative insufficiency
• accommodative excess
• accommodative infacility
• treatment

Location and time

Theory lectures is given at spring 2021 3.periodvia online sessions (Teams or Zoom) or face to face (lectures and workshops)
Teaching is given at Myllypuro campus and via online sessions (Teams or Zoom)
Spring semester 2021, 3.period, ass the given schedule

Materials

To be announced at the start
Lecture notes, articles
Literature among lecture notes:
Primary Care Optometry: Anomalies of Binocular Vision, sivut 75-85, Dynaaminen retinoskopia 197-199, Akkommodaatiotestit 231-234, Akkommodaatiohäiriöt 267-268
Borish´s Clinical Refraction: Fusion and Binocularity, pages 121-156, Accommodation, the pupil, and presbyopia, sivut 93-138
AOA: Care of the patient with Presbyopia
Stidwill and Fletcher 2014: Normal Binocular Vision: Theory, Investigation and Practical Aspects; The Development of Binocular vision p 15-28.
Scheimann, M & Wick, B., Clinical Management of Binocular Vision - Heterophoric, Accommodative, and Eye Movement Disorders 3rd Ed., Lippincott Williams & Wilkins (2008) Chapter 1-2, 12.
More material will be found in the OMA platform.

Teaching methods

Interactive lectures,
Virtual lectures and meetings
Guided practices and assignments
Guided problem based group assignment (CASE)
Written assignments
Moodle -web course

Employer connections

No work placement

Exam schedules

Spring 2021: Moodle-based exam xx.x.2021 or paper exam
retakes spring 2021 4.period

Guided problem-based group assignment (CASE) return; including individual reflection assignment. xx.xx.2021

International connections

No

Completion alternatives

No

Student workload

1 etc is approximately 27h student work

If the student has a decision of special educational need, shall this student contact the teacher of the course immediately after the end of the registration period (or latest before the start of the course.)

Further information

Normal binocular vision: Normal binocular vision development in the infant and child. Purpose and roles for vision. Basic requirements for binocular vision. Summation. .
-Corresponding retinal points. Binocular localisation. The Horopter. Panums area. Physiological diplopia. Monocular clues and binocular aspect of perception of depth.
- Ocular dominance and examination (Four dot test, fogging dominance test, hole-test)
• Heterophorias / tropias (horisontal, vertical): Classification, Etiology, Symptoms, Examination (Graeffe, Maddox cylinder, Schober cross, Hirsberg and Krimsky), supression. Treatment (prism and spherical power corrections) and prognosis, criteria of Sheard´s and Percival criterions. Assessment of positive, negative and vertical fusional vergence (PRC, NRC, supra, infra with phoropter and prism bars)
• Accommodation and vergence relationship: ACA and CAC, calculated and gradient
• Heterotropias: Definitions, Classification, Etiology, Symptoms, Examination
• Fixation disparity: Definition, Etiology, Symptoms, Examination (Mallet, Wesson card), Treatment
stereo acuity: depth perception, monocular and binocular clues, retinal disparity
• stereoacuity and its development
• stereo tests and testing (TNO ja Titmus)
• Patient records: ICD 10 refractive status, accommodation and vergence disorders
• Preliminary tests, refraction, accommodation and binocular vision measurements: analyze, treatment and prescription

Evaluation scale

0-5

Assessment criteria, satisfactory (1)

The student is able to:
- display learning in professional knowledge and core content in the field
- search information from a variety of sources
- work in various duties in a variety of operating environments
- show that he has achieved the targets for core competence
- display learning in the key safety practices in the field
- act according to ethical principles
- to contribute his learning for the benefit of a group or project

Assessment criteria, good (3)

The student is able to:
- use concepts and knowledge in his field systematically
- find information and assess and use information sources with a critical eye
- apply professional information in professional assignments
- apply professional expertise in various work assignments
- act independently and responsibly in professional contexts
- plan operations with safety in mind
- act according to professional ethics
- act purposefully in working groups and projects

Assessment criteria, excellent (5)

The student is able to:
- use concepts and knowledge in his field professionally
- argue the use of his sources - argue a course of action on the basis of research information or findings
- operate in a range of duties and work situations, also in international contexts
- to act in a way that is customeroriented and displays entrepreneurial spirit
- to act responsibly, taking safety issues into consideration
- argue his choices on the basis of professional ethics
- organise and manage the operation of a group and project

Assessment criteria, approved/failed

The student is able to:
- display learning in professional knowledge and core content in the field
- search information from a variety of sources
- work in various duties in a variety of operating environments
- show that he has achieved the targets for core competence
- display learning in the key safety practices in the field
- act according to ethical principles
- to contribute his learning for the benefit of a group or project

Assessment methods and criteria

Maintainence in lectures and eyeexaminationpractise
Written examinations represets 40% of the final mark
CASE -written individual assignment including reflection 60% of the final mark
Practical guided assignments done and evaluated (oraly)

Qualifications

Refraction