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ERIC Number: EJ878870
Record Type: Journal
Publication Date: 2010-Apr
Pages: 5
Abstractor: ERIC
Reference Count: 4
ISSN: ISSN-0145-482X
Contrast Sensitivity Function Scores, Choices of Illuminated Stand Magnifiers, and Reading
Gerritsen, Bryan
Journal of Visual Impairment & Blindness, v104 n4 p239-243 Apr 2010
Far too often, professionals focus almost solely on individuals' needs for magnification level for reading. Visual acuities are measured and decisions are made for low vision devices largely on the basis of acuity levels. Contrast sensitivity function is often overlooked as a critical need for and predictor of the selection and preference for low vision devices. In this article, the author discusses the correlation between contrast sensitivity function and illumination needs; measurements of the levels of the reflective illuminance of current illuminated stand magnifiers; and calls for further study of the relationship among contrast sensitivity function, illumination needs, and preferences for low vision devices for reading. The author reviews the preference by many individuals with low scores on contrast sensitivity function for low vision devices with bright illumination, and presents a study of the measurements of the reflectance illumination of major illuminated stand magnifiers. (Contains 1 table.)
American Foundation for the Blind. 11 Penn Plaza Suite 300, New York, NY 10001. Tel: 800-232-5463; Tel: 212-502-7600; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A