Cyclopentolate is used mainly to produce mydriasis and cycloplegia for diagnostic purposes.
Cyclopentolate is an anticholinergic drug that blocks the responses of the sphincter muscle of the iris and the accommodative muscle of the ciliary body to stimulation by acetylcholine. Dilation of the pupil (mydriasis) and paralysis of accommodation (cycloplegia) result.
Adults and children over 1 year: 1 drop instilled in the eye(s), followed by a second drop 5 minutes later, if necessary. Drops should be administered 40 to 50 minutes prior to the procedure. To minimize systemic absorption, finger pressure should be applied to the lacrimal sac for 2 to 3 minutes following administration. Alternatively, the eyelids should be kept closed for 2 to 5 minutes following instillation. Patients with heavily pigmented irises may require larger doses. Complete recovery from mydriasis and cycloplegia should occur within 24 hours.
Cyclopentolate may affect the action of concomitantly administered drugs such as: antihistamines, isoniazid, MAO inhibitors, phenothiazines, procainamide, disopyramide, propranolol, quinidine and tricyclic antidepressants. Anticholinergic agents, such as cyclopentolate, antagonize miosis and ciliary body contraction induced by cholinesterase inhibitors and cholinergic agonists.
Cyclopentolate is contraindicated in patients with angle-closure glaucoma or in patients with shallow anterior chambers. Cyclopentolate should not be used in patients, especially children, who have previously experienced a severe systemic reaction to the drug, or in patients with hypersensitivity to any component of a cyclopentolate formulation.
Blinding acute angle-closure glaucoma and raised intraocular pressure may occur during cyclopentolate therapy. The mydriasis may be reduced by the intraocular application of pilocarpine, physostigmine or isoflurophate. Transient burning sensation of the eye is more likely with the 0.5% solution. Systemic effects, resulting from excessive absorption from mucosal surfaces or from ingestion of the drug, may include xerostomia, flushing, tachycardia and urinary retention. More severe systemic effects are tachypnea, scarlatiniform rash, delirium, psychosis, fever, stupor, coma, respiratory failure and death.
pregnancy category C. Animal studies have not been reported. There are no controlled data in human pregnancy. Cyclopentolate ophthalmic is only recommended for use during pregnancy when benefit outweighs risk.
Store in a cool and dry place, away from light. Keep out of reach of children.
Cyclopentolate Hydrochloride (10mg/ml)