[Clinical evaluation of indentation gonioscopy].

The chamber angles of 31 cases (44 eyes) of angle closure glaucoma were studied by Iwata indentation gonioscopy and Goldman gonioscopy. (1) In 39 (89%) of the 44 eyes, the extent of open filtering angle under the indentation gonioscopy was larger than the that under Goldmann gonioscopy. (2) Peripheral iridectomy was indicated in only 68% of the cases when examined by Goldmann gonioscopy, while all cases were performed peripheral iridectomies successfully as indicated by indentation gonioscopy. Therefore, indentation gonioscopy is very useful in the differentiation of functional apposition of the chamber angle from the pathological peripheral synechiae.