Cyclopen Drops 1%

About Cyclopen Drops 1%

Cyclopen Drops Uses

• Pupil dilation before eye examinations
• Cycloplegic refraction to measure accurate eyeglass prescription
• Evaluation of the retina and optic nerve during fundus examination
• Management of eye inflammation such as uveitis, as advised by an eye specialist

Cyclopen Drops Benefits

• Fast and reliable pupil dilation for accurate eye assessment
• Temporary relaxation of the eye focusing muscle for precise refraction testing
• Shorter duration of action compared with atropine, allowing quicker recovery of vision
• Early detection support for retinal and optic nerve conditions during dilated exams

What Experts Say

Cyclopentolate is an anticholinergic agent that works by blocking acetylcholine at muscarinic receptors in the iris sphincter and ciliary muscle. This blockade relaxes the muscles responsible for pupil constriction and lens focusing, producing both mydriasis and cycloplegia within a short period after instillation.

Onset of pupil dilation typically begins within 15 to 30 minutes and cycloplegic refraction is usually reliable within 30 to 45 minutes, with effects lasting up to 24 hours in some individuals. Its shorter duration compared with atropine makes it a preferred choice for routine diagnostic dilation, since vision returns to normal more quickly after the examination is complete.

Systemic absorption through the nasolacrimal duct can produce anticholinergic effects such as dry mouth, flushing, or restlessness, particularly in infants and young children whose blood brain barrier is less developed. Careful dosing and punctal occlusion after instillation reduce this systemic exposure and improve the safety profile during pediatric eye examinations.

Drug Class

• Anticholinergic
• Cycloplegic and Mydriatic Agent

Cyclopen Drops 1% formula

• Cyclopentolate Hydrochloride

Available forms

• Drops

How to use Cyclopen Drops 1%?

• One to two drops should be instilled into the affected eye as directed by the eye doctor.
• The pupil usually takes 30 to 45 minutes to dilate before an eye examination.
• Gentle pressure on the inner corner of the eye for one minute after application helps limit systemic absorption.
• The dropper tip should not touch the eye or any other surface.
• Sunglasses are recommended after the exam until light sensitivity resolves.

Drug Interactions

• Other Anticholinergic Drugs: Concurrent use of oral anticholinergic drugs increases the risk of dry mouth, flushing, and confusion.
• Carbonic Anhydrase Inhibitors: Concurrent use with oral drugs such as acetazolamide may add to systemic anticholinergic effects.
• Sympathomimetic Eye Drops: Concurrent use with phenylephrine or similar drops can enhance pupil dilation and raise the risk of elevated eye pressure.
• Central Nervous System Depressants: Combined use may increase drowsiness, particularly in young children.

Risks and warnings

• Angle Closure Glaucoma: This medicine is contraindicated in patients with narrow or angle closure glaucoma because it can raise eye pressure.
• Central Nervous System Effects: Young children and infants are more sensitive to systemic absorption and may develop drowsiness, restlessness, or feeding difficulty.
• Blurred Vision: Vision remains blurred for several hours after use, so driving or operating machinery should be avoided.
• Light Sensitivity: The eyes become more sensitive to light while the pupil is dilated, so sunglasses are advised.
• Cardiac Caution: Rare systemic absorption can cause a fast heartbeat, so caution is needed in patients with heart conditions.

Cyclopen Drops Side Effects

• Temporary blurred vision
• Increased sensitivity to light
• Stinging or burning sensation on instillation
• Dry mouth
• Eyelid redness or swelling
• Elevated eye pressure in susceptible individuals, a serious reaction requiring urgent care
• Restlessness, disorientation, or slurred speech in children, a serious reaction requiring urgent care
• Rapid heartbeat or flushing, a serious reaction requiring urgent care

Storage Conditions

• Store at room temperature between 15°C and 25°C.
• Keep the bottle tightly closed when not in use.
• Protect from light and store away from direct heat.
• Discard the bottle 4 weeks after opening to avoid contamination.
• Keep out of reach of children.