Differences in the biometric components of the eye between men and women

Objective: To evaluate the differences in ocular biometric components such as axial length (AL), anterior chamber depth (ACD), lens thickness (LT), corneal curvature (CC), and central corneal thickness (CT) between men and women. Methods: Cross-sectional, analytical, and observational study conducted in 106 university with students aged 18-36 years. All subjects underwent refraction under cycloplegia and were assessed through autorefractometry. The refractive error was measured after the application of 1% cyclopentolate. For the identification of biometric components, assessment was performed using the Aladdin equipment (Topcon Corporation, Equipos Oftalmológicos Colombia). Results: A total of 71.7% (76) of the 106 participants included were women aged between 18 and 36 years. The mean AL was 23.3 mm ± 0.88 mm in women and 23.9 mm ± 0.99 mm in men. The ACD was 3.5 mm ± 0.26 mm in women and 3.6 mm ± 0.22 mm in men. LT in women was 3.47 mm ± 0.22 mm and 3.53 mm ± 0.20 mm in men. CT was 538.65 μm ± 0.36 in women and 542.43 μm ± 32.73 in men. The mean keratometry was 43.54D ± 1.35 in women and 42.76D ± 1.79 in men. There were statistically significant differences between CC (−0.78D; p values were 0.01 and 0.03 for men and women, respectively) and AL (0.63 mm; p values were 0.02 and 0.04 for men and women, respectively). Conclusion: There are differences in CC of up to 0.75D that happens to be more curved in women. However, the size of the eyeball is larger in men. These anatomical characteristics are involved in the prevalence of refractive errors