白内障術後の視力とERG

Relation between ERG and Post-operative Vision in Cataract

I．緒言

　白内障の術後の視力は網膜の状態によつて左右される。しかし白内障の術前には眼底検査を十分に行なうことは困離である。したがつて白内障の術前にERGの検査が行なわれる。今回，われわれは徳島大学眼科で手術を行なつた白内障の患者について，術前にERGを記録して術後の視力と比較した。

The electroretinogram (ERG) was recorded in 68 eyes of 51 patients with cataract. The behavior of the ERG was compared with the post-operative vision.

The post-operative vision was measured at least three months after surgery. Two kinds of the ERG were examined in most instances. The one was the ERG obtained by the usual method, and another was the summated ERG recorded by using a feeble red light of a small disk from with the visual angle of 3°.

The results were as follows :

1) In 92% of the normal ERG group, post-operative vision was improved over 1.0.