Carbachol
Miochol is a brand-name ophthalmic solution containing acetylcholine chloride, used primarily during eye surgery to induce rapid pupil constriction. It is typically administered during procedures such as cataract surgery and intraocular lens implantation to provide better visualization and surgical access. The medication works by directly stimulating muscarinic receptors in the iris sphincter muscle, causing the pupil to shrink.
Miochol is an eye medication used during surgery to constrict the pupil by stimulating cholinergic receptors.
Key facts at a glance
- RxNorm
- 81941
- Generic
- Miochol
- 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 during ophthalmic surgeries, particularly cataract extraction and intraocular lens implantation, to achieve controlled miosis (pupil constriction) during the procedure.
Contains acetylcholine chloride, which acts as a direct-acting cholinergic agonist. When applied to the eye, it stimulates muscarinic receptors in the iris sphincter muscle, causing rapid contraction and pupil constriction.
Should only be used by qualified healthcare professionals in surgical settings. Contraindicated in patients with hypersensitivity to acetylcholine. May cause corneal edema, retinal detachment, or bradycardia in rare cases. Requires reconstitution before use as some formulations come in lyophilized form.
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