Displaying 1 results of Tropicamide Stable Isotopes Tropicamide is a medication used to dilate the pupils for eye exams or surgeries. Stable isotopes of tropicamide are isotopically labeled compounds that have the same chemical and physical properties as the regular compound but are enriched with stable isotopes. They are used in research studies to track the metabolism and distribution of tropicamide in the body and to develop new diagnostic and therapeutic applications.