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Corneal Biomechanical Parameters after 60-Year-Old.
Fereshteh Shokrollahzadeh1, Hassan Hashemi2, Abbasali Yekta1
1Department of Optometry, School of Paramedical Sciences, Mashhad University of Medical Sciences, Mashhad, Iran.
Journal of Current Ophthalmology
|January 16, 2023
Summary
This study found lower corneal hysteresis (CH) and corneal resistance factor (CRF) in elderly Iranians, suggesting reduced corneal elasticity. These biomechanical parameters were associated with younger age and female sex in this population.
Area of Science:
- Ophthalmology
- Biomedical Engineering
- Gerontology
Background:
- Corneal biomechanical properties are crucial for ocular health and refractive surgery outcomes.
- Understanding age-related changes in corneal biomechanics is essential for managing eye conditions in the elderly.
Purpose of the Study:
- To determine the distribution of corneal biomechanical parameters, specifically corneal hysteresis (CH) and corneal resistance factor (CRF), in an elderly population in Tehran.
- To investigate the associations of CH and CRF with demographic and ocular factors in this age group.
Main Methods:
- A cross-sectional study involving 420 participants aged over 60 years residing in Tehran.
- Corneal biomechanical parameters were measured using the Reichert Ocular Response Analyzer.
- Multi-stage cluster sampling was employed for participant selection.
Main Results:
- The mean corneal hysteresis (CH) was 8.37 ± 1.55 mmHg and the mean corneal resistance factor (CRF) was 9.06 ± 1.70 mmHg.
- Lower CH and CRF values were observed in men compared to women.
- CH and CRF showed significant associations with younger age, female sex, central corneal thickness, and maximum keratometry.
Conclusions:
- The elderly Iranian population in this study exhibited lower mean CH and CRF values, indicating potentially reduced corneal elasticity.
- These findings highlight the importance of considering age and sex when evaluating corneal biomechanical properties in older adults.
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