Cyclopentolate with phenylephrine Cyclomydril

To achieve greater pupillary dilation and overcome the constrictor effect of cholinergic stimulation, particularly on exposure to bright illumination, both phenylephrine and hydroxyamphetamine can be used in conjunction with a cholinergic antagonist, such as tropicamide or cyclopentolate. Additionally, phenylephrine 1% combined with a low concentration of 0.2% cyclopentolate (Cyclomydril) is recommended for neonates for funduscopic examinations. 

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