球内铅异物伤时ERG与视网膜形态变化

Changes of ERG and Morphology in the Intraocular Lead Foreign Body

研究了兔眼球内铅异物伤后的视网膜电图(ERG)和视网膜形态学变化。伤后2个月,ERG a 波降低75%,b 波降低66%;伤后3个月,视网膜各层细胞广泛出现肿胀、变性、甚至坏死。并对实验结果进行了分析和讨论。提出球内铅异物伤后,应在4周内手术取出异物。

In the present study the morphological and electrophysiological changes of the retinalinjuries of intraocular lead foreign body were observed in rabbit eyes.The considerabledecrease of a and b wave was observed after two months of implantation of lead intovitreous.A wave reduced to 25% and b wave disappeared.The change in structure ofretina was also observed by electronmicroscopy.The results show that the functional andstructural damage of the retina is induced directly by intraocular lead foreign body.