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Visual acuity and refractive errors in a suburban Danish population: Inter99 Eye Study
Article first published online: 23 JAN 2004
DOI: 10.1111/j.1395-3907.2004.0179.x
Additional Information
How to Cite
Kessel, L., Hougaard, J. L., Mortensen, C., Jørgensen, T., Lund-Andersen, H. and Larsen, M. (2004), Visual acuity and refractive errors in a suburban Danish population: Inter99 Eye Study. Acta Ophthalmologica Scandinavica, 82: 19–24. doi: 10.1111/j.1395-3907.2004.0179.x
Publication History
- Issue published online: 23 JAN 2004
- Article first published online: 23 JAN 2004
- Received on April 8th, 2003.; Accepted on September 23rd, 2003.
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Keywords:
- amblyopia;
- epidemiology;
- myopia;
- refraction;
- visual function
Abstract.
Purpose: The present study was performed as part of an epidemiological study, the Inter99 Eye Study. The aim of the study was to describe refractive errors and visual acuity (VA) in a suburban Danish population.
Methods: The Inter99 Eye Study comprised 970 subjects aged 30–60 years and included a random control group as well as groups at high risk for ischaemic heart disease and diabetes mellitus. The present study presents VAs and refractive data from the control group (n = 502). All subjects completed a detailed questionnaire and underwent a standardized general physical and ophthalmic examination including determination of best corrected VA and subjective refractioning.
Results: Visual acuity ≤ 0.05 was found in one eye of one subject and VA ≤ 0.3 in 11 eyes of 11 subjects. The main cause of reduced visual function was strabismic amblyopia. Myopia (≤ − 0.5 D, spherical equivalent refraction) was present in 33.1% of right eyes of the total population but in 56.8% of subjects with a university degree.
Conclusions: Strabismic amblyopia was a significant cause of unilateral visual impairment. Myopia was approximately twice as frequent in subjects with a university degree as in the remaining study population.