title: Change in ocular refraction after tropicamide cycloplegia in preschool children.
abstract: OBJECTIVE
  The aim of the study was to evaluate changes in ocular refraction after 1% tropicamide and its efficacy in diagnosing refractive errors in preschool children.
  
  
  METHODS
  116 children (232 eyes) at the age of 5 to 6 years participated in the study. An objective examination of refraction using autorefractor before and after 1% tropicamide cycloplegia (2 x 1 drop of the agent instilled 5 min apart) was performed in the study.
  
  
  RESULTS
  After the instillation of tropicamide, the spherical component of the refractive error significantly increased by +0.78 D, while the cylindrical component (i.e. its power and axis) remained unaltered. In examining the refractive error, the mean value of the spherical component in children at the age of 5 to 6 years amounted to +1.55 D, in the cylindrical component mean value was -0.51 D, and the axis was 102 degrees.
  
  
  CONCLUSIONS
  1% Tropicamide appears an effective cycloplegic agent in preschool children, excluding children with high hyperopia, anisometropia, or strabismus.
authors: Laboratory of Vision Science and Optometry, Faculty of Physics, Adam Mickiewicz University in Poznań, Poland.
authors: Paweł
authors: P
authors: Nawrot
authors: Anna
authors: A
authors: Przekoracka-Krawczyk
authors: Katarzyna
authors: K
authors: Perz
authors: Patrycja
authors: P
authors: Rusiak
authors: Ryszard
authors: R
authors: Naskrecki
mesh_terms: D000065:Accommodation, Ocular / Q000187:drug effects*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D009184:Mydriatics / Q000008:administration & dosage* / Q000494:pharmacology*; D012029:Refraction, Ocular / Q000187:drug effects*; D012030:Refractive Errors / Q000175:diagnosis*; D015203:Reproducibility of Results; D014331:Tropicamide / Q000494:pharmacology*; D014792:Visual Acuity / Q000187:drug effects
chemical_list: D009184:Mydriatics; D014331:Tropicamide