Ocular biometry characteristics in cataract surgery candidates: A cross-sectional study

Abstract Background: This study was conducted to investigate ocular biometry parameters in cataract surgery candidates in northern Tehran, Iran using OA-۲۰۰۰ biometry device. Methods: In this cross-sectional study, values of ocular biometry parameters, including axial length (AL), anterior chamber depth (ACD), mean corneal curvature (mean K), lens thickness (LT), corneal astigmatism (CA), and white-to-white (WTW) of ۸۱۸ eyes with cataracts, were measured using the OA-۲۰۰۰ biometry device (Tomey, Nagoya, Japan). The participants were divided into six age subgroups, in ۱۰-year intervals. Finally, the values of the biometry parameters were calculated, and the trend of changes was examined for both age and sex subgroups. Results: The mean± standard deviation (SD) of age of the participants was ۶۳.۸۲ ± ۱۳.۲۵ years. Mean ± SD of biometry parameters were as follows: AL, ۲۳.۳۶ ± ۱.۵۵ mm; ACD, ۳.۰۹ ± ۰.۴۰ mm; LT, ۴.۴۵ ± ۰.۵۵ mm; mean K, ۴۴.۵۱ ± ۱.۷۲ D; CA, ۱.۰۶ ± ۰.۹۴ D; and WTW, ۱۱.۸۱ ± ۰.۴۵ mm. Most of the parameters showed significant age-related changes in the total population. There was an increase in LT (P < ۰.۰۰۱) and mean K (P = ۰.۰۰۱), as well as a decrease in AL (P < ۰.۰۰۱) and ACD (P < ۰.۰۰۱) with age. Moreover, AL had a negative negligible correlation with LT (r = -۰.۲۴, P < ۰.۰۰۱) and mean K (r = -۰۲۶, P < ۰.۰۰۱), as well as a weak positive correlation with ACD (r = ۰.۴۴, P < ۰.۰۰۱). Conclusions: Our study revealed that the mean values of most biometric parameters varied across age and sex subgroups. Moreover, most of the parameters showed significant age-related changes in the total population.