Biometric Indices and Their Relation with Age, Sex and Ethnicity

Abstract

Objective : The aim of the present study was to evaluate the association of biometric indices with age, gender and ethnicity. Patients and Methods : Three hundred and seventy patients entered the study from Basir Eye Clinic refractive assessment clinic. Sociodemographic data was gathered. Ocular parameters for both eyes and corneal curvature were measured by immersion technique and manual keratometry, respectively. Results : Axial length was significantly higher among male patients (P = 0.01) and vitreous chamber depth was significantly higher in females (P = 0.02). Axial length and vitreous chamber depth parameters were significantly higher among Arab patients (P = 0.01) compared to Persian patients and there was no other significant differences between these two groups. A significant increase in lens thickness and mean K (P < 0.001, coefficient = 0.15 and 0.023 respectively) and a significant reduction with axial length, anterior chamber depth and vitreous chamber depth (P < 0.001, coefficient = - 0.31, - 0.10 and - 0.37 respectively) were observed in correlation with the age of participants. Conclusion : There was correlation between axial length, depth of the anterior chamber, vitreous chamber depth, lens thickness and mean k with age of the participants. Male subjects and specific ethnicities such as Arab patients tend to have higher axial length values. Keywords: Axial length, anterior chamber depth, vitreous chamber depth, sex, age, Iran.