Acuity Measurements--Do They Indicate How Well a Partially Sighted Person Functions or Could Function?

by Samuel M. Genensky

Purchase

Purchase Print Copy

 FormatList Price Price
Add to Cart Paperback10 pages $20.00 $16.00 20% Web Discount

The measurement of distant visual acuity is all too often believed a reliable indicator of what a person can do with his eyesight. However, it does not tell about the quality of image seen, and cannot tell what a partially sighted person has accomplished or can be expected to accomplish. An accurate assessment for partially sighted persons would include measurement of both near and distant visual acuity, analysis of the person's gross visual fields, as well as feedback from the person regarding his visual fields. The most tragic thing done with distant visual acuity measurements is their use as the major criterion by which to judge whether a person is blind or sighted. The definition of legal blindness has done great harm to partially sighted people. Current research on vision at RAND, which may provide useful information about visual acuity, includes a 3 year grant from the Rehabilitation Services Administration to examine the visual environmental adaptation problems of the partially sighted. (Paper presented at American Academy of Optometry, 1975 annual meeting, Columbus, Ohio.) 10 pp.

This report is part of the RAND Corporation Paper series. The paper was a product of the RAND Corporation from 1948 to 2003 that captured speeches, memorials, and derivative research, usually prepared on authors' own time and meant to be the scholarly or scientific contribution of individual authors to their professional fields. Papers were less formal than reports and did not require rigorous peer review.

Our mission to help improve policy and decisionmaking through research and analysis is enabled through our core values of quality and objectivity and our unwavering commitment to the highest level of integrity and ethical behavior. To help ensure our research and analysis are rigorous, objective, and nonpartisan, we subject our research publications to a robust and exacting quality-assurance process; avoid both the appearance and reality of financial and other conflicts of interest through staff training, project screening, and a policy of mandatory disclosure; and pursue transparency in our research engagements through our commitment to the open publication of our research findings and recommendations, disclosure of the source of funding of published research, and policies to ensure intellectual independence. For more information, visit www.rand.org/about/research-integrity.

The RAND Corporation is a nonprofit institution that helps improve policy and decisionmaking through research and analysis. RAND's publications do not necessarily reflect the opinions of its research clients and sponsors.