Tropicamide
Mydriacyl is a topical ophthalmic solution containing the active ingredient tropicamide, an anticholinergic agent. It works by temporarily blocking nerve signals to the muscles that control pupil size, causing the pupil to dilate. This medication is primarily used by eye care professionals to dilate pupils during diagnostic examinations and procedures.
Mydriacyl is an eye drop that dilates the pupil for eye examinations and diagnostic procedures.
Key facts at a glance
- RxNorm
- 203811
- Generic
- Mydriacyl
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Used to dilate the pupil (mydriasis) and temporarily relax the eye's focusing muscles (cycloplegia) for comprehensive eye examinations, retinal evaluation, and refraction testing. May also be used prior to certain ophthalmic surgical procedures.
Tropicamide is an anticholinergic (antimuscarinic) agent that blocks acetylcholine receptors in the iris sphincter muscle and ciliary body, causing pupil dilation and temporary paralysis of accommodation.
Effects typically last 4-6 hours for dilation. Temporary blurred vision and light sensitivity are common after administration. Patients should not drive until vision clears. Contact lens use during administration should be discussed with the eye care professional. Rare systemic absorption may cause anticholinergic effects, particularly in children and the elderly.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy