Do complaints of amaurosis fugax and blurred vision after transcatheter device closure of atrial septal defect indicate microemboli to retinal vessels?

The study group included 20 adult patients (9 men, 11 women, mean age 57.2 years) with atrial septal defect who had undergone successful closure with the Amplatzer occluder.

The patients were treated with aspirin or warfarin during 6 months after the procedure.

Ocular examination included the 120-point Humphrey visual field.

Two patients complained of amaurosis fugax at 1 and 3 months after the procedure, and two patients complained of blurred vision at 3 and 4 months after the procedure.