Cyclogyl 1% Eye Solution

Cyclogyl 1% Eye Solution is a prescription-only ophthalmic product containing cyclopentolate hydrochloride 1%, used to produce pupil dilation (mydriasis) and temporary paralysis of the eye’s focusing muscle (cycloplegia) for diagnostic eye examinations and certain ophthalmic procedures. It allows eye care professionals to examine the retina, optic nerve, and other internal structures of the eye more thoroughly, and is also used to obtain accurate refraction measurements in some patients, particularly children.

As a prescription mydriatic agent, Cyclogyl 1% Eye Solution is generally administered by, or under the direction of, an eye care professional as part of a clinical visit rather than used routinely at home. In Malaysia it requires a valid prescription, and through DoctorOnCall an online consultation allows a doctor to confirm the clinical context before it is dispensed.

Cyclopentolate hydrochloride is an anticholinergic (antimuscarinic) agent that blocks receptors in the iris sphincter muscle and the ciliary muscle of the eye. This relaxes the iris sphincter, allowing the pupil to widen, and relaxes the ciliary muscle, temporarily suspending the eye’s ability to focus at near distances. These combined effects allow a clearer, more complete view of the internal eye structures during examination.

Cyclogyl 1% Eye Solution is instilled as eye drops directly into the eye(s), typically by or under the direction of an eye care professional, with 1 drop applied and, if necessary, repeated after a short interval according to the specific examination protocol. It is not intended for self-directed use outside a clinical setting, and the dosing schedule should follow the instructions given during the appointment.

The typical adult dose is 1 drop of Cyclogyl 1% Eye Solution instilled into the eye(s), with an additional drop after approximately 5 to 10 minutes if further cycloplegia or dilation is needed, as determined by the eye care professional. In children, particularly infants and younger patients, dosing is approached with extra caution due to a higher risk of systemic absorption and associated side effects.

Cyclogyl 1% Eye Solution typically has a shelf life of around 24 months from the date of manufacture when unopened and stored under recommended conditions, with a shorter recommended in-use period after the bottle is first opened. Always check the expiry date printed on the bottle and carton before use.

Store Cyclogyl 1% Eye Solution below 25°C, protected from light and excessive heat, and keep the bottle tightly closed between uses. Keep out of the reach and sight of children, and discard the solution after the recommended in-use period once opened, as advised by the dispensing pharmacist.

• Known hypersensitivity to cyclopentolate or any other ingredient in the solution
• Untreated narrow-angle or angle-closure glaucoma, or a known anatomical predisposition to angle closure
• Use with caution in infants and young children due to increased susceptibility to systemic anticholinergic effects
• Use with caution in patients with a history of adverse reactions to anticholinergic medicines

• Other anticholinergic medicines taken systemically may add to cyclopentolate’s effects, increasing the likelihood of dry mouth, blurred vision, flushing, or confusion
• Caution is needed when used alongside other centrally-acting medicines in young children, as cyclopentolate can occasionally cause central nervous system effects at higher exposure
• There are no well-established significant food interactions with this eye solution
• Inform the eye care professional of any other medicines being taken, particularly other anticholinergic drugs, before this solution is administered

• Arrange transport or avoid driving after the appointment, since vision will be blurred and light sensitivity increased for several hours
• Bring sunglasses to the appointment to help manage light sensitivity afterward
• Inform the eye care professional of any glaucoma history or prior reactions to eye drops before the solution is used
• Supervise children closely after the appointment, as they may be more sensitive to systemic effects
• Contact the clinic if severe eye pain, marked vision changes, or unusual behavioural symptoms occur after use

Cyclogyl 1% Eye Solution is used within a clinical setting to support diagnostic eye examinations, cycloplegic refraction, and certain ophthalmic procedures, and its dilating and focusing effects are temporary but can persist for several hours. Patients, or parents of young children receiving this solution, should plan to avoid activities that require sharp near vision or driving until the effects have fully worn off, and should discuss any relevant medical history with the eye care professional beforehand.