The relationship of birth weight, gestational age, and postmenstrual age with ocular biometry parameters in premature infants

ABSTRACT Purpose: To analyze ocular biometry parameters and evaluate their relationship with gestational age, birth weight, and postmenstrual age in prematurely born infants. Methods: The right eyes of 361 premature infants born before the 36th gestational week were evaluated. Birth weight, gestational week, and gender were recorded. An A-scan Biometer was used for obtaining axial measurements, including anterior chamber depth, lens thickness, vitreous length, and total axial length. Results: Gestational age and birth weight values ranged from 23 to 36 weeks and from 560 to 2,670 g, respectively. The mean gestational age and birth weight were 30.8 ± 2.8 weeks and 1,497.9 ± 483.6 g, respectively. During the first examination (4-5 weeks of postnatal age), birth weight and gestational age of the infants correlated significantly and positively with lens thickness, vitreous length, and axial length (r>0.5, p摘要 研究目的：分析早产婴儿的眼部生物测量参数，并评估其与胎龄、出生体重及矫正胎龄的相关性。 研究方法：纳入361名胎龄不足36周的早产婴儿，对其右眼实施眼部生物测量。记录受试婴儿的出生体重、胎龄及性别。采用A型超声生物测量仪（A-scan Biometer）采集轴位测量数据，涵盖前房深度、晶状体厚度、玻璃体腔长度及眼轴总长度。 研究结果：受试婴儿的胎龄范围为23~36周，出生体重范围为560~2670g，平均胎龄为30.8±2.8周，平均出生体重为1497.9±483.6g。在首次检查（产后4~5周）阶段，婴儿的出生体重及胎龄均与晶状体厚度、玻璃体腔长度及眼轴长度呈显著正相关（r>0.5，p ）。