Visual acuity and visual satisfaction
12 August 2009
Volume 10, Issue 3
Does a good level of clinical distance visual acuity bring subjective satisfaction with the visual experience?
Optometry in Practice (OiP), the College's quarterly CPD journal, covers the latest research, analysis and opinion from your profession, and provides up to 4 CPD points.
Does a good level of clinical distance visual acuity bring subjective satisfaction with the visual experience?
The aim of this concise study was to assess whether the attainment of a good level of clinical distance visual acuity (VA) was commensurate with subjective satisfaction with the visual experience. A group of healthy young adult myopic habitual spectacle wearers were each invited to rate their recent subjective distance visual experience using a single-item visual analogue scale (VAS). Each participant’s binocular spectacle VA was then determined at 6m using a high-contrast logMAR letter chart. Finally, individuals were questioned (tick-box choice: ‘No’, ‘Yes’, ‘Not Sure’) as to the possibility of their needing a distance spectacle prescription change at their next routine sight test. The results recorded by these well-sighted spectacle wearers indicated that no clinical or statistically significant (P = 0.1) association was evident between subjective rating of recent visual experience and the level of VA. Similarly, the subjective opinion as to whether or not a distance spectacle prescription revision would be necessary in the near future was not statistically significantly associated with the VAS score (P = 0.4), and was also of doubtful clinical or statistical (P = 0.04) association with the habitually good acuity level recorded by these subjects. We conclude that when patients record a habitual distance VA on or better than the ‘0.0’ logMAR chart line the subjective criterion of visual satisfaction – whether recorded in terms of the recent visual experience or the perceived necessity for a spectacle prescription change in the near future – is uniformly good.
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