Distribution of axial length and related factors in an adult population of Mexico City

Background: To analyze the axial length, anterior chamber depth, lens thickness and vitreous chamber depth in an adult population from Mexico City and the surrounding area with a diagnosis of cataract. Methods: Retrospective and descriptive study. We reviewed the medical files of subjects undergoing an ultrasound examination as part of the pre-surgical routine evaluation during a period of 6 months (June 1, 2013-December 31, 2013). Biometric parameters were available for 865 eyes after applying the exclusion criteria. All measurements were made using the Ocuscan RxP ultrasonic biometer (Alcon Laboratories, Fort Worth, Texas, USA). Results: The study included 430 eyes. Mean axial length was 23.44 ± 1.71 mm (median: 23.15, range: 20.48-35.05 mm, 23.27-23.60, 95% confidence interval [CI]). Mean anterior chamber depth was 3.12 ± 0.46 mm (median: Correspondencia: *M.a Soledad Barlatey