Biometric Indices and Their Relation with Age, Sex and Ethnicity

Objective: The aim of the present study was to evaluate the associa-tion 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. Socio-demographic 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 differ-ences 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 in axial length, anterior chamber depth and vit-reous 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 Arab patients tend to have higher axial length values.