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Hypertension, cardiovascular disease, and age-related macular degeneration. Age-Related Macular Degeneration Risk
1Department of Preventive Medicine, University Medical Center, Stony Brook, NY 11794-8036, USA. lhyman@uhmc.sunysb.edu
Insights
Neovascular age-related macular degeneration (AMD) is linked to hypertension, especially in treated patients. This suggests a shared systemic process between neovascular AMD and hypertensive disease.
Area of Science:
- Ophthalmology
- Cardiology
- Public Health
Background:
- Age-related macular degeneration (AMD) is a leading cause of vision loss.
- Understanding risk factors for neovascular and non-neovascular AMD is crucial for prevention and treatment.
- Systemic hypertension and cardiovascular disease are potential contributing factors.
Purpose of the Study:
- To investigate risk factors for neovascular and non-neovascular AMD.
- To examine associations between AMD subtypes and systemic hypertension.
- To explore links between AMD and cardiovascular disease.
Main Methods:
- A case-control study was conducted with participants from 11 ophthalmology practices.
- Data included standardized interviews, blood pressure measurements, and blood samples.
- Polychotomous logistic regression analyses were used to assess associations.
Main Results:
- Neovascular AMD showed positive associations with high diastolic blood pressure, antihypertensive medication use, and higher HDL and dietary cholesterol levels.
- Non-neovascular AMD was not associated with hypertension or cholesterol levels.
- No significant associations were found between either AMD type and other hypertension definitions or cardiovascular diseases.
Conclusions:
- Neovascular AMD appears linked to moderate to severe hypertension, particularly in patients undergoing treatment.
- Findings support distinct pathogenetic pathways for neovascular and non-neovascular AMD.
- A shared underlying systemic process may link neovascular AMD and hypertensive disease.
Objectives:
To describe a case-control study of risk factors for neovascular and non-neovascular age-related macular degeneration (AMD) and to present findings on associations with systemic hypertension and cardiovascular disease.
Methods:
Participants with and without neovascular and non-neovascular AMD were recruited from 11 ophthalmology practices in the New York, NY, metropolitan area. Comprehensive data collection included (1) a standardized interview, (2) blood pressure measurements, and (3) blood samples. Cases and controls were classified from fundus photograph gradings. Polychotomous logistic regression analyses were used to evaluate associations.
Results:
Classification of 1222 sets of available photographs resulted in the inclusion of a neovascular case group (n = 182), a non-neovascular case group (n = 227), and a control group (n = 235). Neovascular AMD was positively associated with diastolic blood pressure greater than 95 mm Hg (odds ratio [OR] = 4.4), self-reported use of potent antihypertensive medication (OR = 2.1), physician-reported history of hypertension (OR = 1.8), use of antihypertensive medication (OR = 2.5), combinations of self-reported and physician-reported data on hypertension and its treatment (OR = 1. 7), high-density lipoprotein level (OR = 2.3), and dietary cholesterol level (OR = 2.2). Non-neovascular AMD was unrelated to hypertension or cholesterol level. No associations were found between either AMD type and other definitions of hypertension or other cardiovascular disease.
Conclusions:
These findings suggest that neovascular AMD is associated with moderate to severe hypertension, particularly among patients receiving antihypertensive treatment. They also support the hypotheses that neovascular and non-neovascular AMD may have a different pathogenesis and that neovascular AMD and hypertensive disease may have a similar underlying systemic process.
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