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Abstract：
UNASSIGNED: This study was conducted to investigate ocular biometry parameters in cataract surgery candidates in northern Tehran, Iran using OA-2000 biometry device.
UNASSIGNED: 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 818 eyes with cataracts, were measured using the OA-2000 biometry device (Tomey, Nagoya, Japan). The participants were divided into si age subgroups, in 10-year intervals. Finally, the values of the biometry parameters were calculated, and the trend of changes was examined for both age and sex subgroups.
UNASSIGNED: The mean (standard deviation [SD]) of age of the participants was 63.82 (13.25) years. Mean (SD) of biometry parameters were as follows: AL, 23.36 (1.55) mm; ACD, 3.09 (0.40) mm; LT, 4.45 (0.55) mm; mean K, 44.51 (1.72) D; CA, 1.06 (0.94) D; and WTW, 11.81 (0.45) mm. Most of the parameters showed significant age-related changes in the total population. There was an increase in LT (P < 0.001) and mean K (P = 0.001), as well as a decrease in AL (P < 0.001) and ACD (P < 0.001) with age. Moreover, AL had a negative negligible correlation with LT (r = - 0.24; P < 0.001) and mean K (r = - 026; P < 0.001), as well as a weak positive correlation with ACD (r = + 0.44; P < 0.001).
UNASSIGNED: 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.
UNASSIGNED: 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 818 eyes with cataracts, were measured using the OA-2000 biometry device (Tomey, Nagoya, Japan). The participants were divided into si age subgroups, in 10-year intervals. Finally, the values of the biometry parameters were calculated, and the trend of changes was examined for both age and sex subgroups.
UNASSIGNED: The mean (standard deviation [SD]) of age of the participants was 63.82 (13.25) years. Mean (SD) of biometry parameters were as follows: AL, 23.36 (1.55) mm; ACD, 3.09 (0.40) mm; LT, 4.45 (0.55) mm; mean K, 44.51 (1.72) D; CA, 1.06 (0.94) D; and WTW, 11.81 (0.45) mm. Most of the parameters showed significant age-related changes in the total population. There was an increase in LT (P < 0.001) and mean K (P = 0.001), as well as a decrease in AL (P < 0.001) and ACD (P < 0.001) with age. Moreover, AL had a negative negligible correlation with LT (r = - 0.24; P < 0.001) and mean K (r = - 026; P < 0.001), as well as a weak positive correlation with ACD (r = + 0.44; P < 0.001).
UNASSIGNED: 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.
摘要：
■这项研究是为了调查德黑兰北部白内障手术候选人的眼部生物参数，伊朗使用OA-2000生物测量装置。
■在这项横断面研究中，眼生物测量参数值，包括轴向长度（AL），前房深度（ACD），平均角膜曲率（平均K），透镜厚度(LT),角膜散光(CA),和白色到白色（WTW）的818眼白内障，使用OA-2000生物测定装置(Tomey，名古屋,日本）。参与者被分为不同年龄的亚组，以10年为间隔。最后,计算生物参数的值，并检查了年龄和性别亚组的变化趋势。
■参与者年龄的平均值（标准偏差[SD]）为63.82（13.25）岁。生物参数的平均值(SD)如下：AL，23.36(1.55)mm;ACD,3.09(0.40)mm;LT,4.45(0.55)mm;平均K,44.51（1.72）D；CA，1.06（0.94）D；和WTW，11.81（0.45）毫米。大多数参数显示出总人口中与年龄相关的显着变化。LT（P<0.001）和平均K（P=0.001）增加，以及AL（P<0.001）和ACD（P<0.001）随着年龄的增加而降低。此外，AL与LT（r=-0.24；P<0.001）和平均K（r=-026；P<0.001）呈负相关，可以忽略不计，与ACD呈微弱正相关(r=+0.44；P<0.001)。
■我们的研究表明，大多数生物参数的平均值因年龄和性别亚组而异。此外，大多数参数显示总人口中与年龄相关的显著变化.
■在这项横断面研究中，眼生物测量参数值，包括轴向长度（AL），前房深度（ACD），平均角膜曲率（平均K），透镜厚度(LT),角膜散光(CA),和白色到白色（WTW）的818眼白内障，使用OA-2000生物测定装置(Tomey，名古屋,日本）。参与者被分为不同年龄的亚组，以10年为间隔。最后,计算生物参数的值，并检查了年龄和性别亚组的变化趋势。
■参与者年龄的平均值（标准偏差[SD]）为63.82（13.25）岁。生物参数的平均值(SD)如下：AL，23.36(1.55)mm;ACD,3.09(0.40)mm;LT,4.45(0.55)mm;平均K,44.51（1.72）D；CA，1.06（0.94）D；和WTW，11.81（0.45）毫米。大多数参数显示出总人口中与年龄相关的显着变化。LT（P<0.001）和平均K（P=0.001）增加，以及AL（P<0.001）和ACD（P<0.001）随着年龄的增加而降低。此外，AL与LT（r=-0.24；P<0.001）和平均K（r=-026；P<0.001）呈负相关，可以忽略不计，与ACD呈微弱正相关(r=+0.44；P<0.001)。
■我们的研究表明，大多数生物参数的平均值因年龄和性别亚组而异。此外，大多数参数显示总人口中与年龄相关的显著变化.
