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Gender differences in biometry prediction error and intra-ocular lens power calculation formula

Behndig, Anders; Montan, Per; Lundström, Mats LU ; Zetterstrom, Charlotta and Kugelberg, Maria (2014) In Acta Ophthalmologica 92(8). p.759-763
Abstract
PurposeTo analyze changes over time in biometry prediction error (BPE) after cataract surgery with special reference to the impact of gender and the intra-ocular lens (IOL) calculation formula. MethodsAbout 65% of Swedish cataract surgery units participating in the outcome registration of the National Cataract Register (NCR) were included in this prospective register study. Data for planned and postoperative refraction and keratometry during the month of March 2004-2013 were analyzed, divided by gender. The newly introduced variables axial length and IOL calculation formula were analyzed for March 2013. Gender differences in BPE with correct sign (BPESign) and absolute biometry prediction error (BPEAbs) were compared for the Haigis' and... (More)
PurposeTo analyze changes over time in biometry prediction error (BPE) after cataract surgery with special reference to the impact of gender and the intra-ocular lens (IOL) calculation formula. MethodsAbout 65% of Swedish cataract surgery units participating in the outcome registration of the National Cataract Register (NCR) were included in this prospective register study. Data for planned and postoperative refraction and keratometry during the month of March 2004-2013 were analyzed, divided by gender. The newly introduced variables axial length and IOL calculation formula were analyzed for March 2013. Gender differences in BPE with correct sign (BPESign) and absolute biometry prediction error (BPEAbs) were compared for the Haigis' and Sanders-Retzlaff-Kraff T (SRK/T) formulas. ResultsThe BPEAbs decreased throughout the study period. In 2004-2006, the BPEAbs was larger in women than in men (p<0.05), but this difference disappeared from 2007. For 2004 through 2009, the mean BPESign was -0.1050.79D for women, but -0.003 +/- 0.73D for men. After 2009, this myopic error for women gradually diminished. The Haigis' formula performed better in women than the SRK/T formula (p<0.001); the SRK/T formula rendered a BPESign similar to that from 2004 to 2009 in women. Women had steeper corneas and shorter axial lengths than men (p<0.001). ConclusionThe myopic BPE in women - associated with steeper corneas and shorter axial lengths - is decreasing, possibly owing to an increased use of the Haigis' formula. Using the Haigis' formula to a higher extent can potentially further reduce the BPEs after cataract surgery. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
biometry prediction, cataract surgery, gender, intra-ocular lens, calculation formula
in
Acta Ophthalmologica
volume
92
issue
8
pages
759 - 763
publisher
Wiley-Blackwell
external identifiers
  • wos:000345342600034
  • scopus:84929049296
ISSN
1755-3768
DOI
10.1111/aos.12475
language
English
LU publication?
yes
id
e9dcf391-640c-4d77-8a5f-ec4f24593e1c (old id 4982795)
date added to LUP
2015-02-03 07:11:21
date last changed
2017-01-01 03:57:24
@article{e9dcf391-640c-4d77-8a5f-ec4f24593e1c,
  abstract     = {PurposeTo analyze changes over time in biometry prediction error (BPE) after cataract surgery with special reference to the impact of gender and the intra-ocular lens (IOL) calculation formula. MethodsAbout 65% of Swedish cataract surgery units participating in the outcome registration of the National Cataract Register (NCR) were included in this prospective register study. Data for planned and postoperative refraction and keratometry during the month of March 2004-2013 were analyzed, divided by gender. The newly introduced variables axial length and IOL calculation formula were analyzed for March 2013. Gender differences in BPE with correct sign (BPESign) and absolute biometry prediction error (BPEAbs) were compared for the Haigis' and Sanders-Retzlaff-Kraff T (SRK/T) formulas. ResultsThe BPEAbs decreased throughout the study period. In 2004-2006, the BPEAbs was larger in women than in men (p&lt;0.05), but this difference disappeared from 2007. For 2004 through 2009, the mean BPESign was -0.1050.79D for women, but -0.003 +/- 0.73D for men. After 2009, this myopic error for women gradually diminished. The Haigis' formula performed better in women than the SRK/T formula (p&lt;0.001); the SRK/T formula rendered a BPESign similar to that from 2004 to 2009 in women. Women had steeper corneas and shorter axial lengths than men (p&lt;0.001). ConclusionThe myopic BPE in women - associated with steeper corneas and shorter axial lengths - is decreasing, possibly owing to an increased use of the Haigis' formula. Using the Haigis' formula to a higher extent can potentially further reduce the BPEs after cataract surgery.},
  author       = {Behndig, Anders and Montan, Per and Lundström, Mats and Zetterstrom, Charlotta and Kugelberg, Maria},
  issn         = {1755-3768},
  keyword      = {biometry prediction,cataract surgery,gender,intra-ocular lens,calculation formula},
  language     = {eng},
  number       = {8},
  pages        = {759--763},
  publisher    = {Wiley-Blackwell},
  series       = {Acta Ophthalmologica},
  title        = {Gender differences in biometry prediction error and intra-ocular lens power calculation formula},
  url          = {http://dx.doi.org/10.1111/aos.12475},
  volume       = {92},
  year         = {2014},
}