IFIS II: Effect of the selective alpha 1A receptor antagonist tamsulosin on the thickness of the iris dilator muscle

IFIS is a syndrome usually caused by systemic alpha 1A blockers used to treat benign prostatic hyperplasia. It is known that alpha 1A receptor antagonists are located on the iris dilator smooth muscle. Aim of the study is to assess the effect of selective alpha 1A blockers on the thickness of the iris dilator muscle assessed with OCT and evaluate if there are differences between patients with selective alpha 1A receptor blockers and a control group with no history of an intake of tamsulosin.