Isopilocarpine nitrate is primarily used in ophthalmology as a miotic agent to constrict the pupil and reduce intraocular pressure. It is commonly applied in the treatment of glaucoma, helping to manage the condition by facilitating the drainage of aqueous humor. Additionally, it is utilized in certain diagnostic procedures to induce miosis for detailed eye examinations. The compound may also be employed in the management of conditions like accommodative esotropia, where it aids in improving visual alignment. Its therapeutic effects make it a valuable tool in both clinical and diagnostic settings related to eye health.