ExoticRx · exoticrx.com/drugs/phenylephrine-ophthalmic
Mydfrin, Neo-Synephrine Ophthalmic
Alpha-1 adrenergic agonist causing contraction of iris dilator muscle (mydriasis) without cycloplegia. Also causes conjunctival vasoconstriction.
10% concentration can cause systemic hypertension — use 2.5% in small animals. Mydriasis without cycloplegia (pupil still accommodates). Avoid in narrow-angle glaucoma.
Species references:All Cat (Domestic) drugsAll Dog (Domestic) drugs
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