Validity and reliability of visual acuity measurements

Lovie-Kitchin, Jan E. (1988) Validity and reliability of visual acuity measurements. Ophthalmic and Physiological Optics, 8(10), pp. 363-370.


A more scientific method than the Snellen chart for determining visual acuity is imperative for research studies and is desirable in many clinical situations. The psychometric method using the constant contour interaction S-chart of Flom has been regarded as an accurate and reliable visual acuity measure and has been used widely for research purposes. This paper compares visual acuity measured by the S-chart with that measured by the Snellen and Bailey-Lovie charts. The results indicate that the Bailey-Lovie chart is a valid, reliable and rapid method of measuring threshold visual acuity for research purposes.

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157 citations in Scopus
120 citations in Web of Science®
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ID Code: 5663
Item Type: Journal Article
Refereed: Yes
Additional Information: For more information, please refer to the journal’s website (see link) or contact the author. Author contact details:
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ISSN: 0275-5408
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 1988 Blackwell Publishing
Deposited On: 01 Dec 2006 00:00
Last Modified: 15 Jan 2009 07:16

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