title: The influence of drop size of cyclopentolate, phenylephrine and tropicamide on pupil dilatation and systemic side effects in infants.
abstract: In this prospective study, microdrops (mean drop volume 5.6 microl) and commercially available standard drops (mean drop volume 35.4 microl) of cyclopentolate, phenylephrine and tropicamide's clinical efficacy and systemic side effects were compared. Sixty-one infants requiring diagnostic pupil dilatation were studied for pupillary diameter, systemic blood pressure, heart rate and skin flushing changes related to the instillation of mydriatic drops. Both microdrops and standard drops of the drugs produced significant increase in pupillary diameter compared with the baseline (p<0.01). In cyclopentolate and phenylephrine groups, there was no significant pupillary diameter changes between microdrops and standard drops (p>0.05). Mean blood pressure increased significantly in infants given standard drops. There was no significant change in the group that was given microdrops. In our opinion, reduced volume of mydriatics can prevent possible side effects.
authors.affiliation: Cumhuriyet University, School of Medicine, Department of Ophthalmology, Sivas, Turkey.
authors.forename: O
authors.initials: O
authors.lastname: Elibol
authors.forename: T
authors.initials: T
authors.lastname: Alçelik
authors.forename: N
authors.initials: N
authors.lastname: Yüksel
authors.forename: Y
authors.initials: Y
authors.lastname: Caglar
mesh_terms: D000287:Administration, Topical; D003519:Cyclopentolate / Q000008:administration & dosage* / Q000009:adverse effects; D004305:Dose-Response Relationship, Drug; D006439:Hemodynamics / Q000187:drug effects; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D009184:Mydriatics / Q000008:administration & dosage* / Q000009:adverse effects; D009883:Ophthalmic Solutions; D010656:Phenylephrine / Q000008:administration & dosage* / Q000009:adverse effects; D011446:Prospective Studies; D011680:Pupil / Q000187:drug effects* / Q000502:physiology; D012867:Skin / Q000098:blood supply / Q000187:drug effects; D014331:Tropicamide / Q000008:administration & dosage* / Q000009:adverse effects
chemical_list: D009184:Mydriatics; D009883:Ophthalmic Solutions; D010656:Phenylephrine; D003519:Cyclopentolate; D014331:Tropicamide