Factors affecting refractive outcome after cataract surgery in primary angle-closure glaucoma
- Sam Seo; Chong Eun Lee; Young Kook Kim; Sang Yoon Lee; Jin Wook Jeoung; Ki Ho Park
- Dept. of Ophthalmology (안과학)
- Issue Date
- Clinical & Experimental Ophthalmology, Vol.44(8) : 693-700, 2016
- Background: To evaluate the biometric factors associ-
ated with the accuracy of intraocular lens power pre-
dictions for cataract surger y in primary angle-closure
(PAC) or primary angle-closure glaucoma (PACG) eyes.
Design: Cross-sectional study
Participants: This study included 103 PAC or PACG
patients who had undergone cataract surgery.
Methods: All participants underwen t anterior-
segment optical coherence tomography preopera-
tively. Two novel biometric factors – the relative lens
vault (the ratio of lens vault to anterior vault) and
the anterior vault (the sum of lens vault and anterior
chamber depth) – were measured using customized
software. The powers of the implanted intraocular
lens and the actual postoperative refractive errors
were compared. The mean refractive error and the
median absolute error were calculated and compared
using repeated measures ANOVA and Wilcoxon
matched-pairs signed-rank test. The biometric factors
associated with the postoperative refractive error
were investigated by multivariate regression analysis.
Main Outcome Measures: Preoperative anterior-
segment biometric factors, difference between pre-
dicted and actual postoperative refraction.
Results: The Haigis, Hoffer Q and SRK/T formulas all
showed a slight tendency toward resultant hyper-
opia, respectively (P < 0.001, P = 0.05, P = 0.003).
The Hoffer Q formula had the least prediction error
(P < 0.001). In the multivariate regressio n analysis,
the relative lens vault was the only independent
factor predicting postoperative refractive error
(β = 0.392, P = 0.011).
Conclusion: Intraocular lens power predictions for
cataract surgery in PAC or PACG patients can be
inaccurate. Such results might be associated with
anterior-segment biometric factors. Preoperative rel-
ative lens vault appears to be a signiﬁcant factor
predicting refractive outcome after cataract surgery
in patients with PAC or PACG.
- cataract surgery; pri mary angle-closure glaucoma; refractive outcome; relative lens vault
- Appears in Collections:
- 1. Journal Papers (연구논문) > 1. School of Medicine (의과대학) > Dept. of Ophthalmology (안과학)
- Keimyung Author(s)
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