BOBO0221 Spectacles optics I

Faculty of Medicine
Spring 2013
Extent and Intensity
2/0/0. 1 credit(s). Type of Completion: z (credit).
Teacher(s)
prof. RNDr. Radim Chmelík, Ph.D. (lecturer), doc. MUDr. Svatopluk Synek, CSc. (deputy)
Guaranteed by
prof. RNDr. Radim Chmelík, Ph.D.
Department of Optometry and Orthoptics – Departments of Non-medical Branches – Faculty of Medicine
Contact Person: Anna Petruželková
Supplier department: Department of Optometry and Orthoptics – Departments of Non-medical Branches – Faculty of Medicine
Course Enrolment Limitations
The course is only offered to the students of the study fields the course is directly associated with.
Course objectives
The course teaching is based on the fundamentals of geometrical optics, which are applied to eye as multi element optical system, which may be affected by various refractive errors (myopia, hyperopia, presbyopia, astigmatism, anisometropia, aniseikonia, aphakia). The aim of the course is to elucidate the effect of proper spectacle lenses as well as the method of their technical parameters determination for individual refractive errors.
Syllabus
  • 1. Fundamentals of geometrical optics for spectacle optics (sign convention, refraction at a spherical surface, Gauss’ lens formula, system of refractive surfaces in the paraxial approximation, tabular calculations, the vertex power). 2. Imaging by the system of two centred optical surfaces in the paraxial space (cardinal points and planes of an optical system and their positions, transversal, longitudinal (axial) and angular magnification, the Helmholtz-Lagrange law, construction of image, vergence of a light pencil). 3. Gullstrand’s schematic eye (description and calculation of the corneal, lenticular and overall system of the schematic eye in the paraxial space, basic parameters and positions of cardinal points), real values of optical parameters of eye, alternative eye models. 4. Eye anatomy (overview, retina, photoreceptors, fundamental axes), photopic and scotopic vision, retinal image size, maximum eye resolution. 5. Visual acuity and optotypes (definition of visual acuity, dependence on age, basic parameters of optotypes, Snellen chart, optotype size gradation, LogMAR and VAR scales, ETDRS and cRLM charts, general requirements stressed on optotypes, angular and coincidence visual acuity) 6. Emmetropic, myopic and hyperopic eye. Far point, near point, axial refraction, accommodation interval, accommodation amplitude, expressions for individual ametropias, principle of ametropia correction. 7. Myopic eye. Classification of myopia, etiology & symptoms, correction, recalculation of the vertex power of a spectacle lens on the change of its distance from a cornea, retinal image size. 8. Hyperopic eye. Classification of hyperopia, etiology & symptoms, correction, recalculation of the vertex power of a spectacle lens on the change of its distance from a cornea, retinal image size. 9. Aphakic eye. Imaging by an aphakic eye. Correction of aphakia by a spectacle lens, by a contact lens, and by an intraocular lens. 10. Nature of the axial refraction with respect to eye length and to optical system power. Axial and system ametropia, emmetropic state of eye, dependence of aniseikonia on axial refraction.
Literature
  • A. H. Tunnacliffe: Introduction to Visual Optics. ABDO College, Canterbury 2004.
  • Brýlová optika pro SZS, Mgr.Rutrle M, IDVPZ Brno, 1993
  • R. Baštecký: Praktická brýlová optika. R+H Optik, Praha 1997.
  • BALÍK, J. and J. BOBEK. Technický sborník oční optiky. Edited by J. Polášek. 2. vyd. Praha: Oční optika, 1975, 579 s. info
Teaching methods
Lecture completed by exercises that immediately follow the lecture subject matter.
Assessment methods
2 written tests take place during each of both semesters; 50 % of the maximum total score is necessary to pass.
Language of instruction
Czech
Further Comments
The course is taught annually.
The course is taught: every week.
The course is also listed under the following terms Spring 2000, Spring 2001, Spring 2002, Spring 2003, Spring 2004, Spring 2005, Spring 2006, Spring 2007, Spring 2008, Spring 2009, Spring 2010, Spring 2011, Spring 2012.
  • Enrolment Statistics (recent)
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