The population requirement for cataract extraction: a cross-sectional study.

Area of Science:

• Ophthalmology
• Public Health
• Health Services Research

Background:

• Cataract extraction is a common surgical procedure.
• Understanding the demand for cataract surgery is crucial for healthcare planning.

Purpose of the Study:

• To assess the prevalence of indications for cataract extraction within the population.
• To compare the demand for cataract surgery with the available healthcare capacity.

Main Methods:

• An age-stratified random population sample (n=2783) aged 55+ was surveyed in Avon and Somerset.
• Cataract extraction need was evaluated using vision-related quality of life, visual acuity, and the Oxford Clinical Cataract Classification.
• Surgical suitability and patient desire for surgery were also assessed.

Main Results:

• Prevalent requirements for cataract extraction ranged from 7 to 29 per 1000 individuals aged over 55.
• This translates to a national prevalent requirement of 384,000 for England using the most inclusive criteria.
• After excluding those with questionable suitability or desire for surgery, the estimated requirement was 325,000.

Conclusions:

• There appears to be a modest imbalance between the supply and demand for cataract surgery.
• The prevalence of untreated severe cataract is low, suggesting current National Health Service surgical capacity is sufficient for these cases.