Assessment of visual impairment: The relationship between self-reported vision and ‘gold-standard’ measured visual acuity

Jennifer Whillans, James Nazroo

Research output: Contribution to journalArticle (Academic Journal)peer-review

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Abstract

Self-report assessments of health are commonly favoured indicators used in large-scale nationally, representative surveys as they can be readily and cost-effectively collected from large numbers of people; however, subjective assessments have been criticised. Using data from the Irish Longitudinal Study on Ageing (TILDA), this article examines the relationship between self-reported vision and measured visual acuity (Logarithm of the Minimal Angle of Resolution [logMAR]). The analysis indicates that normal vision is well captured by a subjective response, but there is a slight over-identification of visual impairment using self-reported vision. These findings are discussed in relation to social patterning of misreporting. Given the simplicity of the self-report assessment to administer and the correspondence between this and measured visual acuity, it is argued to be a suitable indicator of visual impairment in older people.
Original languageEnglish
Pages (from-to)236-248
Number of pages13
Journal British Journal of Visual Impairment
Volume32
Issue number3
Early online date20 Aug 2014
DOIs
Publication statusPublished - 1 Sep 2014

Keywords

  • Logarithm of the Minimal Angle of Resolution (logMAR)
  • older people
  • subjective measures of health
  • validation study
  • vision loss

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