| Tropicamide (U.S.N.L.M.) | |
|---|---|
| Dosing | 1 or 2 drops 0.5% 15 or 20 minutes before exmination. |
| Chem Specs | tropicamide 0.5%, 1% |
| Quantities | 2, 3, 15ml |
| Cost | 40.65/15ml |
| Class | parasympatholytic, |
| Action | Binds to and blocks the M4 muscarinic receptors in the iris sphincter and ciliary muscle. |
| Usage | Mydriasis and cycloplegia for diagnostic procedures. |
| May produce a transient elevation of IOP. . | |
| Contraindications | Hypersensitivity to any component of the product. |
| Pediatric use | May rarely cause dangerous CNS disturbances. Psychotic reactions, behavioral disturbances, and vasomotor or cardiorespiratory collapse in children have been reported with the use of anticholinergic drugs. |
| Pregnancy | Category C. Animal reproduction studies have not been conducted |
| Peak mydriasis 20-40 min. Peak cycloplegia 20-35 min. Recovery 4-8 hrs. 1% tropicamide dilates about twice as fast as 2.5% phenylephrine.1 |