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 Ocuscanâ 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: 3.13 mm, range: 1.77-4.54 mm, 3.07-3.16, 95% CI). Mean lens thickness was 4.47 ± 0.57 mm (median: 4.50 mm, range: 3.18-5.78, 4.41-4.52, 95% CI). Mean vitreous chamber depth was 15.81 ± 1.63 mm (median: 15.58 mm, range: 12.98-26.78, 15.66-15.97, 95% CI). Mean age of the patients was 70.03 ± 10.50 years (median 70 years, range 40-96 years).

Conclusions:

In a Mexican adult population from Mexico City, particularly in women, a lower axial length and anterior chamber depth was observed. Compared to other studies, the axial length was found within an average range. Age and sex were significantly associated with the other parameters evaluated in this study.

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