Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Subjective type
Patent
1989-11-28
1990-11-20
Dzierzynski, Paul M.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Subjective type
351226, A61B 302
Patent
active
049714341
ABSTRACT:
A method for diagnosing deficiencies in and expanding the size of a person's "Useful Field Of View" (UFOV). The UFOV is determined by the eccentricity (in degrees of visual angle) at which peripheral targets (presented within an embedding context) can be localized 50% of the time while performing a concurrent visual task in central vision. The method provides multiple blocks of trials, each block of trials consists of displaying a plurality of times before a subject's vision a set of four sequentially presented images having specific characteristics, and the specific characteristics of each block of trials is changed each time a new block of trials is displayed before the subject. By changing the characteristics of each block of trials, a diagnosis can be made of the subject's vision by creating a subject database that contains the subject's indicated responses to each block of trials having specific characteristics and comparing the subject database to a normative diagnostic database in order to achieve a diagnosis. The method also employs training programs to expand the size of the subject's UFOV.
REFERENCES:
patent: 4685784 (1987-08-01), Kirchhuebel
Report entitled "Vision Assessment Technology and the Screening of Older Drivers", Frank Schieber, Ph.D., Feb., 1988.
Appendix: U.S. Department of Transportation's Research Initiative, Frank Schieber, Ph.D., 1988.
"Pattern Discrimination Perimetry: A New Concept in Visual Field Testing," 7th Int'l Visual Field Supposium (1987), B. Drum et al.
Article entitled "Age and Visual Search: Expanding the Useful Field of View," 12/1988.
Article entitled "Visual Localization: Age and Practice," J. Opt. Soc. Am., vol. 3, No. 6, (Robert Secular and Karlene Ball), Jun. 1986.
Dzierzynski Paul M.
Visual Resources, Inc.
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