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Gender differences in biometry prediction error and intra-ocular lens power calculation formula
Anders Behndig1, Per Montan, Mats Lundström
1Department of Clinical Sciences/Ophthalmology, Umeå University Hospital, Umeå, Sweden.
Acta Ophthalmologica
|June 17, 2014
Summary
Biometry prediction error after cataract surgery has decreased, particularly in women. Increased use of the Haigis intra-ocular lens calculation formula may explain this improvement.
Area of Science:
- Ophthalmology
- Biomedical Engineering
- Surgical Outcomes
Background:
- Cataract surgery outcomes are influenced by biometry prediction error (BPE).
- Gender and intra-ocular lens (IOL) calculation formulas can impact BPE.
- Understanding these factors is crucial for optimizing surgical results.
Purpose of the Study:
- To analyze temporal changes in BPE after cataract surgery.
- To investigate the influence of gender on BPE.
- To assess the impact of different IOL calculation formulas on BPE.
Main Methods:
- Prospective study of Swedish cataract surgery units (March 2004-2013).
- Analysis of planned and postoperative refraction and keratometry data.
- Comparison of BPE (signed and absolute) between genders using Haigis' and SRK/T formulas.
Main Results:
- Overall BPE decreased during the study period.
- Initial higher BPE in women diminished over time.
- Haigis' formula showed better performance in women compared to SRK/T.
- Women exhibited steeper corneas and shorter axial lengths than men.
Conclusions:
- Myopic BPE in women is decreasing, linked to shorter axial lengths and steeper corneas.
- Increased adoption of the Haigis' formula is a likely contributor to this improvement.
- Further utilization of the Haigis' formula may further reduce BPE in cataract surgery.
