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Heart aging when near vision difficulty begins
Şahbender Koç1, Sadettin Selçuk Baysal2
1Keçiören Education and Training Hospital, Unıversity of Health Sciences, Ankara, Turkey.
Summary
Measuring near vision with a simple test can identify signs of cardiac aging. Reduced accommodation amplitude (AA) is linked to increased risk of diastolic dysfunction and other heart aging indicators.
Area of Science:
- Ophthalmology
- Cardiology
- Gerontology
Background:
- Cellular aging affects non-renewable tissues like the heart and lens more than renewable ones.
- Declining accommodation amplitude (AA) is a hallmark of age-related near vision loss.
- Cardiac aging is a significant, independent risk factor for cardiovascular diseases.
Purpose of the Study:
- To investigate the association between cardiac aging and accommodation amplitude (AA).
- To explore if AA measurement can serve as a screening tool for cardiac aging.
Main Methods:
- 500 participants (mean age 50) were grouped by AA measured with a Raf ruler.
- Lens nucleus changes during accommodation were imaged via biomicroscopy and measured using ImageJ.
- Cardiac aging was assessed using electrocardiography, heart rate variability, and diastolic dysfunction evaluation.
Main Results:
- Subjects with reduced near vision clarity (29-33 cm) showed a 2.6-fold higher risk of diastolic dysfunction.
- These subjects also had a 2.1-fold higher risk of reduced lateral e' velocity and a 1.5-fold higher risk of an abnormal low/high frequency ratio.
Conclusions:
- Subjective accommodation amplitude (AA) measurement is a simple screening method.
- AA can predict key cardiac aging parameters, notably diastolic dysfunction.
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