Standardized measurement of visual acuity.
The authors reviewed the main aspects of visual acuity evaluation such as the characteristics of the test devices, the notation employed in recording the visual acuity level and the procedures for V.A. assessment, in both distance and near tests. In addition, new ten-letter charts, that tend to follow strictly the standardization guideline suggested by NAS-NRC, are described.
Ricci
F
F
Department of Surgery, University of Rome Tor Vergata, Italy. riccif@utovrm.it
Cedrone
C
C
Cerulli
L
L
D015350:Contrast Sensitivity; D006801:Humans; D008027:Light; D011327:Printing; D014787:Vision Tests / Q000295:instrumentation / Q000592:standards*; D014792:Visual Acuity / Q000502:physiology