miotic drug
Definition
Noun: A pharmaceutical agent that causes miosis, which is the constriction or narrowing of the pupil of the eye.
Usage
This term is used specifically in medical and pharmacological contexts to describe a class of drugs that act on the muscles of the iris to reduce pupil size. They are primarily used in the treatment of certain eye conditions, such as glaucoma.
Examples
- The ophthalmologist prescribed a miotic drug to help lower the intraocular pressure.
- Pilocarpine is a classic example of a miotic drug.
- Miotic drugs are often administered in the form of eye drops.
Advanced Usage
- Therapeutic Use: Miotic drugs are a cornerstone in managing open-angle glaucoma, as they facilitate the drainage of aqueous humor from the eye.
- Mechanism: These drugs typically work by stimulating the muscarinic receptors of the sphincter pupillae muscle, causing it to contract.
Variants and Related Words
- Miotic (noun/adjective): Can be used as a noun synonym for "miotic drug" or as an adjective describing the effect (e.g., a miotic agent, a miotic response).
- Antiglaucoma drug: A broader category that includes miotic drugs among other types of medications.
- Parasympathomimetic: A pharmacological class describing drugs that mimic the parasympathetic nervous system; many miotic drugs fall into this category.
Synonyms
- Pupil-constricting drug
- Miotic agent
- Parasympathomimetic (for those miotics that work via this mechanism)
Related Phrases
- Induce miosis: The action performed by a miotic drug.
- The primary function of this medication is to induce miosis.
- Counteract mydriasis: Miotic drugs are sometimes used to reverse excessive pupil dilation (mydriasis).
- After the eye exam, a miotic drug was used to counteract the mydriasis caused by the dilating drops.
Noun
-
a drug that causes miosis (constriction of the pupil of the eye)
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