方法：对46例46眼AACG组患者、52例52眼浅前房组患者和50例50眼正常眼组患者，按不同年龄段分组，应用接触式A超对三组受检者进行眼前节生物测量，包括前房拥挤率(chamber crowd ratio，CCR)、晶状体厚度(lens thickness，LT)、晶状体位置(lens position，LP)、中央前房深度(anterior chamber depth，ACD)。对三组间眼前节生物测量参数进行统计学分析。

结果：各年龄段(50～59岁、60～69岁、70岁以上)：AACG组、浅前房组和正常眼组生物测量参数比较， CCR，LT，LP和ACD差异具有统计学意义(P<0.01)。急性PACG组和浅前房组两两比较，各年龄段中：仅CCR差异具有显著统计学意义(P<0.01)，LT，LP和ACD差异无统计学意义(P>0.05)。

结论：CCR可以作为评价AACG患者眼前节拥挤状态的指标，其敏感性优于LT和LP。

METHODS: Forty-six eyes of 46 patients with AACG and 52 eyes of 52 patients with shallow anterior chamber and 50 eyes of 50 normal individuals were examined. The parameters of anterior segment including chamber crowd rate(CCR), lens thickness(LT), lens position(LP)and anterior chamber depth(ACD)were measured by A-ultrasound according to different ages in each group. The data were performed statistical analysis in three groups.

RESULTS: In each age range group(≥50～59 years old, ≥60～69 years old, ≥70 years old), statistically significant differences in three groups(AACG, shallow anterior chamber group and the controls)were found in CCR, LT, LP, ACD(P<0.01). There were statistically significant differences only in CCR(P<0.01)but not in LT,LP and ACD(P>0.05)between AACG and shallow anterior chamber group in each age range group.

CONCLUSION: CCR can be used as the index of evaluating crowding state of anterior segment in AACG patients and the sensitivity is better than LT and LP.