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Cyclopentolate chemical structure

2-(dimethylamino)ethyl (1-hydroxycyclopentyl)(phenyl)acetate
IUPAC name
CAS number
ATC code


Chemical formula {{{chemical_formula}}}
Molecular weight 291.385 g/mol
Elimination half-life
Excretion {{{excretion}}}
Pregnancy category C
Legal status
Routes of administration Topic

Cyclopentolate is a mydriatic and cycloplegic agent commonly used during pediatric eye examinations. Cyclopentolate is also administered as an atropine substitute to reverse muscarinic and CNS effects of indirect cholinomimetic (anti-AChase) administration.

When used in eye drops in pediatric eye examinations, Cyclopentolate 0.5% and 1.0% is used to stop the eye focusing at near distance, enabling the optometrist, ophthalmologist or orthoptist to obtain a more accurate reading of the focusing power of the eyes.

The drops take around 30 minutes to work and around 24 hours to wear off (with patients advised not to drive a vehicle or operate machinery for the first 12 hours). The pupils become wider when Cyclopentolate is administered, making the eyes more sensitive to light. Close objects (and possibly distant objects) will also appear blurred.

File:Cyclopentolate 1 percent Pupils.jpg
Side effects to Cyclopentolate are rare, but can include effects such as disorientation, incoherent speech or visual disturbances during the 24-hour period that the drug has an effect.

References Edit


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