兔眼球内铁异物存留与取出后房水玻璃体Fe、Cu、Zn分析

Iron,Copper and Zinc Contents in Aqueous and Vitreous after Iron Foreign Body Implantedand Extracted in Rabbit Eye

纯铁片植入４５只兔眼玻璃体，１天～１２周取出。火焰原子吸收分光光度法测定房水、玻璃体Ｆｅ、Ｃｕ、Ｚｎ含量。铁植入后，房水、玻璃体Ｆｅ值增高，玻璃体Ｃｕ值增高；玻璃体Ｚｎ值低于正常，且对照组单纯穿通伤玻璃体Ｚｎ值亦较正常低。铁取出后１０周，房水、玻璃体Ｆｅ值下降，但铁存留８～１２周组玻璃体Ｆｅ、Ｃｕ值仍较高。探讨了铁异物存留时间及其取出后与房水、玻璃体Ｆｅ、Ｃｕ、Ｚｎ值的关系和机理。

he pieces of pure iron were implanted into the vitreous cavity of 45 rabbits and extracted during 1 day to 12 weeks. The iron,copper and zinc contents in the aqueous and vitreous were analysed by the atomic ab-sorption spectrophotometer. The results showed that following implantation the iron contents in the aqueous and vitreous and the copper contents in the vitreous increased, and zinc levels in the vitreous of both experi-mental eyes and merely perforating eyes in the control were lower than those in normal eyes. After ten weeks of extraction of the iron,a decrease of iron contents was presented,but the iron and copper levels in the vi-treous which had contained the iron for 8 to 12 weeks were higher.The relation between the time of the im-plantation and extraction of iron foreign bodies and the quantities of iron,copper,and zinc in aqueous and vi-treous,and the mechanism are discussed.