Extraction of magnetic foreign bodies from the clear lens.

In 20 patients with magnetic foreign bodies in the clear lens, I closed the apperture in the anterior lens capsule by a fibrin cover after extraction of the foreign body. The lens remained clear in 17 patients; total cataract was formed in three. Two of these three patients had had a foreign body in the lens for a longer period of time, and at the time of the extraction the signs of lens siderosis were marked. The cause of the cataract progression in the third subject was not clear. There were no complications of operation or in the postoperative period.