I have a very disturbing positive dysphotopsias of my multifocal toric iol, practically, in special light condition, dim light mostly, peripheral light hits the edge of my iol and the light is being reflected inside (I think), reflecting the optic
rings, so am practically see iol optic circles illuminated. When I use brimonidine, the circles disappear totally, probably because the pupil shrinks and peripheral light cannot hit the edges anymore.