• J A Ferguson, M J Goldacre, J Henderson, and A J Bron.
• Department of Public Health and Primary Care, University of Oxford.
• Eye (Lond). 1991 Jan 1; 5 ( Pt 3): 379-84.

Objectivesto report on trends in ophthalmology workload using linked statistical data;Designanalysis of linked abstracts of hospital inpatient and day case records for ophthalmology;Settingsix districts in Southern England covered by the Oxford record linkage study;Subjectsrecords for hospital admissions to ophthalmology from 1975 to 1985;Measurements And Main ResultsOver the period of study, the number of episodes of inpatient and day case care increased by 16.3%. Notable increases in age-specific admission rates were seen among the elderly. An increase in the number of individuals treated contributed about 67% and an increase in multiple admissions per individual contributed about 33% to the increase in admission rates. Both average length of stay per episode and total time in hospital per individual decreased consistently during the 11 years; and there was no increase in emergency readmissions over time. No significant changes over time were found in admission rates for retinal detachments and defects or for glaucoma. There was a statistically significant increase averaging 4.8% per annum in admission rates for cataract, and a significant decrease averaging 5.2% per annum in admission rates for strabismus and other disorders of binocular eye movement between 1975 and 1985.ConclusionsAge-specific admission rates in ophthalmology are much higher in the very young and old than in other age groups. Patterns of work in the specialty are therefore particularly affected by variation in the age distribution of the population. The increase in cataract surgery reflected both the increase in numbers of old people in the population and an increase in age-specific operation rates for cataract. Attempts to alter attitudes and behaviour of the elderly regarding eye diseases, disability, and facilities for treatment may have had a positive impact on the use of services. The decrease in admissions for children probably reflects the impact made by child health surveillance programmes. As the child screening programme has expanded, the admission rates for strabismus have decreased.

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