Abstract

Purpose: To assess age-related ocular biometric findings and relation with amplitude of accommodation in normal subjects.

Methods: This study was conducted on 295 normal subjects. In all participants slit lamp biomicroscopy, funduscopy, and measurement of visual acuity and refraction, and biometry were performed. Amplitude of accommodation was measured by the push up test. In this study, right eyes of subjects were selected to statistical analysis.

Results: The mean spherical equivalent was 0.13±0.27D and the mean keratometric power was 44.03±1.51D. There was a significant relationship between age and the mean keratometric power (r=0.164, P=0.006). The mean axial length of eyes was 22.91±0.76mm and was correlated with both the keratometric power (r=-0.727, P<0.001) and the axial length (r=-0.165,P=0.019). The mean amplitude of accommodation was 4.75±1.96D. Our results showed a significant relationship between age and amplitude of accommodation (r=-0.734, P<0.001). The mean anterior chamber depth was 3.19±0.33mm. The anterior chamber depth was also found to correlate with both age (r=-0.368, P<0.001) and amplitude of accommodation (r=0.399, P<0.001).

Conclusion: Aging effects on ocular parameters (keratometric power, axial length, and anterior chamber depth). Subjects with deep anterior chamber depth have slightly higher amplitude of accommodation.

Keywords: Presbyopia;Amplitude of accommodation;Biometric findings