The primary limitation of this study is the use of retrospective data from a convenience sample of subjects scheduled to have cataract surgery at UCSF. However, this feature should not necessarily bias the results in any particular direction such that certain racial groups would have greater likelihood of smaller or greater LP, RLP, and LT. Furthermore, we adjusted for potential confounding factors such as age, gender, and axial length when appropriate. Additional limitations of this study include the relatively small sample size in some groups, investigating lens parameters among cataract surgery population, and the self-reported nature for ethnicity in our study. Moreover, each ethnic group included in this study also has substantial intragroup differences. Self-identification within an ethnic group also does not preclude genetic contribution from another ethnic group. To minimize intra-ethnic variation, we excluded individuals of biracial ancestry. However, it is possible that there is still great genetic diversity within each cohort. Furthermore, this is a retrospective study and parameters from procedures such as gonioscopy and ASOCT were not consistently available. Although IOP is available, we did not evaluate this factor as an outcome because it was assessed by different technicians and devices and at various times of the day, without a fixed protocol.