GENERATING THE SNELLEN CHART BY COMPUTER

Authors
JOHNSON AT DOOLY CR SIMPSON CR
Citation
At. Johnson et al., GENERATING THE SNELLEN CHART BY COMPUTER, Computer methods and programs in biomedicine, 57(3), 1998, pp. 161-166
Citations number
7
Categorie Soggetti
Computer Science Interdisciplinary Applications","Computer Science Theory & Methods","Computer Science Interdisciplinary Applications","Engineering, Biomedical","Medical Informatics","Computer Science Theory & Methods
Journal title
Computer methods and programs in biomedicine → ACNP
ISSN journal
01692607
Volume
57
Issue
3
Year of publication
1998
Pages
161 - 166
Database
ISI
SICI code
0169-2607(1998)57:3<161:GTSCBC>2.0.ZU;2-N
Abstract
The Snellen Chart is the eye chart that is commonly used to measure vi sual acuity. The chart has combinations of nine different letters in e leven different lines, each smaller than the one above. Repeated measu res of visual acuity may result in chart memorization and false inform ation. Thus, a computer program was written to produce randomized mult iple versions of Snellen eye charts. The chart may be changed at some distance from the computer in order to hear subject letter identificat ions during exercise testing. Different sized letters can also be prod uced so that the distance from the subject to the chart can vary. (C) 1998 Elsevier Science Ireland Ltd. All rights reserved.