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A population based case-control study of cataract and inhaled corticosteroids
L Smeeth1, M Boulis, R Hubbard
1Department of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, UK. liam.smeeth@lshtm.ac.uk
The British Journal of Ophthalmology
|September 26, 2003
Summary
Inhaled corticosteroids, commonly used for respiratory conditions, may increase cataract risk, especially at higher doses and with prolonged use. Healthcare providers should consider the lowest effective doses to minimize this risk.
Area of Science:
- Ophthalmology
- Pulmonology
- Pharmacology
Background:
- Systemic corticosteroid use is a known risk factor for cataract development.
- The association between low-dose inhaled corticosteroids (ICS) and cataract risk remains unclear.
- This study aimed to investigate the relationship between ICS use and cataract incidence.
Purpose of the Study:
- To quantify the risk of cataract associated with inhaled corticosteroid use.
- To determine if a dose-response relationship exists between inhaled corticosteroid use and cataract risk.
- To evaluate the impact of exposure duration on cataract risk.
Main Methods:
- Population-based case-control study utilizing the UK General Practice Research Database.
- 15,479 individuals with cataract (cases) were matched with 15,479 controls.
- Matching criteria included age, sex, general practice, and observation period.
Main Results:
- An adjusted odds ratio of 1.10 (95% CI 1.00 to 1.20) was found for any ICS exposure.
- A significant dose-response relationship was observed, with higher daily doses (>1600 micro g) showing an increased odds ratio of 1.69 (95% CI 1.17 to 2.43).
- Increased duration of ICS use was also associated with a higher risk of cataract.
Conclusions:
- Higher doses and longer duration of inhaled corticosteroid use are linked to an elevated risk of cataract.
- It is recommended to use the lowest effective doses of ICS for optimal control of airway diseases.
- The potential risk of cataract associated with high-dose ICS therapy requires greater clinical awareness.
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