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ERIC Number: EJ1054996
Record Type: Journal
Publication Date: 2015-Feb
Pages: 3
Abstractor: As Provided
Reference Count: 9
ISBN: N/A
ISSN: ISSN-0031-921X
Photorefraction of the Eye
Colicchia, Giuseppe; Wiesner, Hartmut; Zollman, Dean
Physics Teacher, v53 n2 p103-105 Feb 2015
Photorefraction is a method to easily estimate the refractive state of the eye. The principle of photorefraction involves projecting light into the eye during flash photography and then examining the paths of light that emerge from the pupil after scattering on the back portion of the interior of the eyeball (fundus). We will explain the optical principles underlying the method for eccentric photorefraction and describe how students can perform it using current digital cameras. Our purpose is not to diagnose refractive errors reliably, but to use devices popular among young people that, in combination with an important ophthalmic context, may be successful in improving students' interest for learning optical concepts.
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail: pubs@aapt.org; Web site: http://scitation.aip.org/tpt
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A