Diotrope

Tropicamide, sold under the brand name Mydriacyl among others, is a medication used to dilate the pupil and help with examination of the eye.[3] Specifically it is used to help examine the back of the eye.[4] It is applied as eye drops.[3] Effects occur within 40 minutes and last for up to a day.[3] Common side effects include blurry vision, increased intraocular pressure, and sensitivity to light.[3] Another rare... [wikipedia]