title: Predictability of intraocular lens calculation using the Holladay II formula after in-the-bag or optic captured posterior chamber intraocular lens implantation in paediatric cataracts.
abstract: OBJECTIVE
  To assess the predictability of postoperative refraction using the Holladay II-formula in paediatric patients randomized to undergo 2 different surgical procedures.
  
  
  METHODS
  Fourty cataractous eyes of 29 patients (age 2.31-11.75 years) were operated with in-the-bag intraocular lens implantation. Randomly, either an anterior vitrectomy (group A, 19 eyes) or posterior optic capture without vitrectomy (group B, 21 eyes) was performed. Randomization was done in 4 separate age groups, in accordance with 4 target refractions (0, 1, 2 and 3 dpt) to compensate for the anticipated myopic shift.
  
  
  RESULTS
  The predicted refraction correlated with the achieved postoperative refraction (total group, p = 0.019), closer in group A (p = 0.033) than in group B (p = 0.265); however, the results of groups A and B were not significantly different (p = 0.324). There was a tendency for postoperative targeted hyperopia being underachieved in the youngest patients.
  
  
  CONCLUSIONS
  The Holladay II formula provides reliable intraocular lens calculation in paediatric cataracts. The tendency to underachieve the target refraction in younger patients needs further investigation.
authors.affiliation: Department of Ophthalmology, Johann Wolfgang Goethe University, Frankfurt am Main, Germany. Luechtenberg@em.uni-frankfurt.de
authors.forename: Marc
authors.initials: M
authors.lastname: Lüchtenberg
authors.forename: Claudia
authors.initials: C
authors.lastname: Kuhli-Hattenbach
authors.forename: Maria
authors.initials: M
authors.lastname: Fronius
authors.forename: Alina A
authors.initials: AA
authors.lastname: Zubcov
authors.forename: Thomas
authors.initials: T
authors.lastname: Kohnen
mesh_terms: D001699:Biometry / Q000379:methods; D019923:Capsulorhexis / Q000379:methods; D002386:Cataract / Q000150:complications; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007903:Lens Capsule, Crystalline / Q000601:surgery*; D019654:Lens Implantation, Intraocular / Q000379:methods*; D007910:Lenses, Intraocular; D011446:Prospective Studies; D012029:Refraction, Ocular / Q000502:physiology*; D042262:Retinoscopy; D014821:Vitrectomy