An ophthalmic stimulator for temporarily constricting a pupil of an eye comprises an irradiation control system, having a feedback system, to generate an irradiation control signal using a feedback of the feedback system an irradiation source, coupled to the irradiation control system, to generate an irradiation and an irradiation delivery system, having a targeting system and coupled to the irradiation control system, to receive the irradiation from the irradiation source, and to direct a patterned irradiation in a pattern to a treatment region of an iris of the eye using the targeting system wherein the irradiation control system controls at least one of the irradiation source and the irradiation delivery system with the irradiation control signal so that the patterned irradiation causes a temporary constriction of the pupil, without causing a permanent constriction of the pupil.
