Opinto-opas

Objective

Knowledge base
Students are able to

• describe basic physical characteristics of light (the wavy nature and aberrations of light, the behavior of light in media, polarization and light passage through multiple polarizers, image quality, diffraction and interference).
• describe and solve problems by calculating and drawing a human eye as an optical system
• describe the basic features of lighting and guide in choosing the right lighting
• calculate power effect in different vertex distance
• calculate, measure and describe the effect of prism on spectacle lenses and the elimination of unwanted prism effect and use of that in the purpose meaning
• calculate and describe the magnification effect of spectacles and design solutions in the case of aniseiconic cases
• describe the properties of eye protection and sunglasses

Clinical/practical
Students are able to
Work placement, 1 week, 2 ECTS including Positia:
• advise and dispense the most appropriate spectacles, sunglasses and safety glasses with regard to durability and comfort (anatomy), as well as cosmetic and lifestyle considerations.
• measure single-power and multifocal spectacles, taking into account standards.
• adjust spectacles, taking into account the characteristics of different frame materials
• grind single-power and multifocal spectacles
• perform simple spectacle services and repairs
• identify frame materials and know how to select special treatments

Content

Physical Optics:
Wave optics and aberrations:
• Characteristics of wave motion
• Classifications of the electromagnetic spectrum
• Total and partial coherence
• Diffraction (single slit, circular aperture, limits of resolution, zone plates)
• Interference (double slit, multiples slits, thin film, antireflective coatings, holography)
• Scattering (Rayleigh compared to Tyndall)
• Dispersion

Interaction of light and matter:
• Atomic energy levels, absorption and emission line spectra
• Continuous spectra
• Fluorescence (photons, energy levels)
• Lasers (theory of operation, speckle pattern)
• Spectral transmission
• Light emitting diodes (LED)

Polarization:
• Linear polarized light
• Circular and elliptical polarization
• Polarization by reflection (glare reduction, Brewster’s law)
• Effect of scattering on polarization
• Transmission through successive polarizers (stress analysis, Malus’ law)

Image quality:
• Resolving power
• Point and line spread function
• Modulation transfer function (Fourier optics)

Visual Optics:
Radiation of the eye:
• Radiometry (radiant, intensity, radiance, and irradiance)
• Photometry (Luminosity function, luminous intensity, luminance, and illuminance, Lambertian surfaces-cosine laws)
• Spectral transmission of the ocular media
• Retinal illuminance
• Effects of radiation (especially infrared, visible and ultraviolet)
Schematic eye models:
• Dioptric components
• Cardinal points, entrance and exit pupils
• Ametropia: far point, near point, correction
• Accommodation: amplitude and effectivity
• Astigmatism, including correction
• Retinal image size, spectacle magnification, and relative spectacle magnification
• Apertures
• Entrance and exit pupil size and location
Optics of the eye:
• Characteristics of components (curvature, thickness, separation, refractive indices, and axial length)
• Reference angles and axes
• Retinal image size
• Optical function of the pupil – depth of field
Quality of retinal image:
• Aberrations
-spherical
-chromatic
-coma
-curvature
-oblique astimatism
-distortion
• Diffraction and stray light
• Point and line spread functions
Wave front technology and its use in optometry


Spectacle lenses:
• geometry of the lens surface: aspherical and atoric lenses
• Power effect distance and near and vertex distance
• spectacle magnifications
o shape and power factors
o relative spectacle magnifications
o iseiconic lenses
• lens prism and prismatic effect
o thickness differences in lens by the prism
o combination of thin prisms
o resolution of an oblique prism into horizontal and vertical components, oblique prism
o prism effect in near distances
• vertical prism eliminations aniseiconic cases
o Slab off, prism segment, Fresnell prism, taking account of height
• lens induced problems; aberrations, weight, thickness, limits of field, secondary images, magnification, jump and displacement in spherical and sphero-cylindrical lenses
o Safety goggles and sun glasses
-absorptive lenses
-specification of lens tints and absorptive coatings
-characteristics of photochromic lenses
Spectacles for safety , occupational and hobby purpose:
-impact resistance
-safety goggles
-standards
•Lens and frame manufacturing and selections: product presentations by importers/agents

Location and time

Myllypuro Campus.
Teacher of the course will give further information before the beginning of the course.

Materials

To be announced.

http://tyonako.fi/tiedostopankki/41/Suojalasit_kansallinen_soveltamisohje_10.9.2018.pdf
https://www.ttl.fi/wp-content/uploads/2016/11/Huoneentaulu_Hitsaajan_ja_polttoleikkaajan_suojaimet.pdf
Tapaturmavakuutuskeskus / Työtapaturmat tilastovuodet 2005-2015
https://www.stuk.fi/julkaisut/sateily-ja-ydinturvallisuus-kirjasarja/ionisoimaton-sateily-ultravioletti-ja-lasersateily
Transitions Lenses https://www.youtube.com/watch?v=CKhrRuv2BJY
https://www.zeiss.com/vision-care/en_de/products-services/dispensing-tools-and-instruments-by-zeiss/exam-and-refraction.html
Rodenstock DNEye Scanner: https://www.youtube.com/watch?v=5AHE0DfSrmQ
Hoya iDentifier: https://www.youtube.com/watch?v=k6EaRahE9dE
Zeiss. Introduction to Opthalmic Optics
Hecht, E. Optics, 3rd Edition
Zeiss. Handbook of Opthalmic Optics
Fowler, C. & Latham Petre, K. Spectacle Lenses: Theory and Practice
Fannin, T. E. & Grosvenor, T. Clinical Optics
Elkington A.R., Frank H.J. & Greaney M.J. Clinical Optics 3rd Edition

Teaching methods

Lessons
Learning assignments
Practicals
Work placement

Employer connections

Practicals 1 ECTS
Work placement 2 ECTS
Visitors

Exam schedules

Exams:
27.2. Johanna & Saija
4.3. Juha Kopu
Retakes:
I retake
Ti 21.4. klo 16.30 – 20.00
(code: SU202004, ilmoittautumisaika:17.3. – 1.4.)
II retake
Ti 9.6. klo 16.30 – 20.00                
(code: SU202006, ilmoittautumisaika:29.4 - 16.5.)

International connections

N/A

Completion alternatives

N/A

Student workload

10 credits = 270 hours work for student
2 ECTS Physical optics, lectures 14h, written examination 4h
5 ECTS Visual optics lectures 40h, written examination 3h
1 ECTS Individually assessed practical examinations 8h
2 ECTS Work placement, 1 week

Further information

If the student has individualized educational support arrangements, 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.)

Detailed contents :
1 ECTS Individually assessed practical examinations (focimetry, lens tolerances, selecting frames and lenses, repairing and adjusting the frame) 8h
2 ECTS Work placement, 1 week
10 x customer service situation
1 selecting appropriate sunglasses or frame
1 selecting lenses with coatings and taking measurements for spectacles
1 adjusting new spectacles for customer, and advice wearing and maintenance
1 re-adjusting frames
1 measuring 1-power, 2-power and progr.lenses with focimeter

Evaluation scale

0-5

Assessment criteria, satisfactory (1)

The student is able to:
- display learning in core content
- use individual professional concepts correctly
- find information for a specific situation
- distinguish between non-theoretical and theoretical information
- act in individual professional situations as instructed - display learning in his professional field
- show that he has achieved the targets for core competence
- follow safety instructions
- display learning in the ethical principles of his professional field
- operate as a member of a student group

Assessment criteria, good (3)

The student is able to:
- display an understanding of concepts and professional knowledge in the field
- assess and limit the amount of information needed
- operate well in typical professional duties and contexts
- operate in a multicultural environment
- operate safely
- act according to professional ethics
- operate in a student group

Assessment criteria, excellent (5)

The student is able to:
- use concepts and knowledge in his field systematically
- assess and use various information sources
- apply professional information in professional assignments
- work in various duties in a variety of operating environments
- act independently and responsibly in professional contexts
- to take safety issues into consideration in his action
- argue his choices on the basis of professional ethics
- organise the activities of a group of students

Assessment criteria, approved/failed

The student is able to:
- display learning in core content
- use individual professional concepts correctly
- find information for a specific situation
- distinguish between non-theoretical and theoretical information
- act in individual professional situations as instructed - display learning in his professional field
- show that he has achieved the targets for core competence
- follow safety instructions
- display learning in the ethical principles of his professional field
- operate as a member of a student group

Assessment methods and criteria

Continuing assessment and assignments.
Grade is determined by exams. Exam (optometry) to pass 50 %.
Exam (physical optics) 60 % of final grade.
Exam (optometry) 40 % of final grade.

Qualifications

Spectacle application and manufacturing and Geometrical optics