Comparing the anterior chamber depth between East Asian and non-East Asian eyes

Abstract Purpose To compare the anterior chamber depth between East Asian and non-East Asian eyes. Method A retrospective cohort study was conducted on a sample of 4276 eyes. Data spanning 7 years was obtained from a private ophthalmology practice in Sydney. Patient files were stratified into three age groups (<40-years, 40-60 years, >60-years) and then further sub-divided by ethnicity (East-Asian and non-East-Asian). Statistical analysis was conducted using IBM SPSS Statistics-26. Results The results demonstrate that age, sex, and ethnicity all impact the ACD. The mean ACD in East-Asians (3.13±0.36mm) is significantly (p<0.001) lower than that of non-East-Asians (3.21±0.35mm). The mean ACD in females (3.10±0.36mm) is significantly (p<0.001) lower than that of males (3.21±0.34mm). Mean ACD also declines with age; the mean ACD for the <40-years, 40-60 years and >60 years are 3.49±0.29mm, 3.13±0.34mm and 3.08±0.35mm respectively. The trends in sex and age were also observed when the data was analysed by ethnicity. Conclusion Eyes of East-Asian ethnicity have shallower ACD in all age groups. The female gender also had shallower ACD in both East-Asian and non-East-Asian eyes.