Krishnamohan V K, Wheeler M B, Testa M A, Philipps A F
J Pediatr Ophthalmol Strabismus. 1982 Jan-Feb;19(1):28-32. doi: 10.3928/0191-3913-19820101-08.
The AVC of the lens was examined and graded at birth and prospectively at weekly intervals, in 30 preterm infants of gestational age between 27 and 34 weeks. Influence of postnatal age, postnatal nutrition, subsequent development of retinopathy of prematurity as well as intrauterine growth retardation, multiple gestation and prenatal maternal steroid administration on regression of AVC was analyzed. We conclude that examination of the AVC of the lens can reliably be used to estimate gestational age between 27th and 34th weeks, in appropriate as well as small for gestational age infants. Such an examination can be used postnatally, provided that the infant's corrected gestational age is between 27 and 34 weeks. Prenatal steroid administration, postnatal nutritional status or subsequent development of retinopathy of prematurity do not appear to be correlated with the rate of AVC regression.
对30名孕龄在27至34周的早产婴儿在出生时检查晶状体的房-晶状体静脉夹角（AVC）并进行分级，之后每周进行前瞻性检查。分析了出生后年龄、出生后营养、早产儿视网膜病变的后续发展以及宫内生长迟缓、多胎妊娠和产前母体类固醇给药对AVC消退的影响。我们得出结论，晶状体AVC检查可可靠地用于估计孕龄在27至34周的适于胎龄和小于胎龄婴儿的孕周。只要婴儿的矫正孕周在27至34周之间，这种检查就可以在出生后使用。产前类固醇给药、出生后营养状况或早产儿视网膜病变的后续发展似乎与AVC消退率无关。
