角膜异物伤在眼外伤中发病率占首位。为了挑除方便、除净锈环和减少损伤而试制角膜异物钻。特介绍如下。 制作方法 备一微型电机(玩具马达,1.5伏),取5mm直径铜柱15mm长,一端中心钻洞深达8mm,其直径与电机轴外径相等,铜柱的另一端中心钻洞深达7mm,其直径与口 Corneal foreign body injury in the incidence of ocular trauma in the first place. In order to remove the convenience, in addition to the net rust ring and reduce damage and trial of corneal foreign body drilling. Special introduction is as follows. Production method A micro motor (toy motor, 1.5 volts), take 5mm diameter copper pillar 15mm long, one end of the center drill hole depth of 8mm, the diameter and the motor shaft outer diameter equal to the other end of the copper pillar drill hole depth of 7mm , Its diameter and mouth