| Literature DB >> 696798 |
Abstract
New design principles have been applied to the construction of an illiterate E chart. A chart can thus be produced in which the only variable in the visual acuity task for letters of different size is the letter size itself. A simple method for using this chart in field studies is described.Mesh:
Year: 1978 PMID: 696798 DOI: 10.1097/00006324-197805000-00008
Source DB: PubMed Journal: Am J Optom Physiol Opt ISSN: 0093-7002