For the in vitro study,iron particles were implanted into the corpus vitreum of 10 eyes of 5 rabbits,and iron particles were only dropped into a small glass bottle containing the corpus vitreum from the rabbit eyes in vivo.

• 体外实验将铁屑放入盛有兔眼玻璃体的透明玻璃瓶中，体内实验将异物置入5只兔的10眼玻璃体内。