Observation of anterior chamber angle with ultrasonic biomicroscopy after posterior chamber implantation of intraocular lens

Objective: To observe the changes of anterior chamber angle after extracapsular cataract extraction (ECCE) with posterior chamber implantation of intraocular lens (IOL) and discuss the associated factors.

Methods: The changes of anterior chamber angle in 31 cases (41 eyes) with senile cataract were observed with ultrasonic biomicroscopy after ECCE and posterior chamber implantation of IOL.

Results: (1) There were 6 eyes with peripheral anterior synechia of the iris, 12 eyes with abnormal pupillary configuration, which were related to the position of IOL haptics. (2) The IOL haptics fixed out of the capsular bag were not all fixed at the ciliary grooves. (3) After postoperative 3 months, the residual cortex of the lens still existed. Too much residual cortex in the eye caused postoperative peripheral iris bombe and narrowing of chamber angle.

Conclusions: The changes of anterior chamber angle after posterior chamber implantation of IOL are related to the position of IOL haptics and much residual cortex must be avoided.