medicine: mydriacyl
mydriacyl description
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Tropicamide (Mydriacyl) is an anticholinergic used as a mydriatic.
Uses
Tropicamide is a parasympatholytic that produces short acting mydriasis (dilation of the pupil) and cycloplegia when applied as eye drops. It is used to allow better examination of the lens, vitreous humor, and retina. Due to its relatively short duration of effect (4–8 hours), it is typically used during eye examinations such as the dilated fundus examination, but it may also be used before or after eye surgery. Cycloplegic drops are often also used to treat anterior uveitis, decreasing risk of posterior synechiae and decreasing inflammation in the anterior chamber of the eye.
Tropicamide is occasionally administered in combination with p-hydroxyamphetamine (brand name Paremyd), which is a sympathomimetic. The use of the sympathomimetic drug causes the iris dilator muscle to be directly stimulated, causing increased dilation. In the United States, the sympathomimetic drop most commonly used along with Tropicamide, is 2.5% phenylephrine Hydrochloride (brand name AK-Dilate).
Right eye was instilled by tropicamide, producing anisocoria (unequal pupil size). It is mydriatic (dilated) compared to the left eye.
Right eye half an hour after administration of tropicamide. Note the red retina.
Side effects
Systemic side effects are very rare. tropicamide is often preferred to atropine because atropine has a longer half-life, causing prolonged dilation and blurry vision for up to a week. atropine has less sting effect, but can be toxic or fatal if ingested in large quantities by children or adults.
| Name | Information | Price* | Quantity |
| Mydriacyl 0.5% | 15 ml (Tropicamide) | $24 | 15 ml |
| Mydriacyl 1% | 15 ml (Tropicamide) | $30 | 15 ml |
| Generic Tropicamide Eyedrops 1% | 5 ml | $7 | 5 ml |
*) Prices related to some of online drugstores. There are only approximate prices. For some of drugs is needed a prescription.
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