Power prediction for one-piece and three-piece intraocular lens implantation after cataract surgery in patients with chronic angle-closure glaucoma: A prospective, randomized clinical trial

Soolienah Rhiu, Eun Suk Lee, Tae Im Kim, Hye Sun Lee, Chan Yun Kim

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Abstract

Purpose: To assess the accuracy of intraocular lens (IOL) power prediction for cataract surgery in chronic angle-closure glaucoma (CACG) patients with different IOLs' implantation. Methods: This prospective randomized clinical trial included 45 eyes with CACG and 48 eyes with normal controls undergoing cataract surgery. In the CACG group, 23 eyes (51%) had three-piece IOL implantation and 22 eyes (49%) had one-piece IOL implantation. In the normal control group, 25 eyes (52%) had three-piece IOL implantation and 23 eyes (48%) had one-piece IOL implantation. Using the SRK/T formula, the mean difference between the predicted and actual postoperative spherical equivalent [mean absolute error (MAE)] was obtained and converted to natural logarithm (ln) for statistical analysis. The power of the implanted IOL was calculated to predict postoperative SE using three formulas: SRK II, Holladay II and Hoffer Q by post hoc analysis in each group. The predictive accuracy of each formula was analysed by comparing the lnMAE. Results: In the one-piece IOL group, there was no difference in lnMAE between the CACG and normal control group (p = 0.314). In the three-piece IOL group, the lnMAE of the CACG group was larger than that of the normal control group (p < 0.001). The lnMAEs calculated by the SRK/T formula were more accurate than the Holladay II (p = 0.045) and Hoffer Q (p = 0.042) formula in the CACG one-piece IOL group. Conclusions: Implantation of one-piece IOLs provides similar power prediction accuracy comparable to normal cataract patients; this result may be explained by the IOL haptic configuration or design.

Original languageEnglish
Pages (from-to)e580-e585
JournalActa Ophthalmologica
Volume90
Issue number8
DOIs
Publication statusPublished - 2012 Dec 1

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Angle Closure Glaucoma
Intraocular Lens Implantation
Intraocular Lenses
Cataract
Randomized Controlled Trials
Control Groups

All Science Journal Classification (ASJC) codes

  • Ophthalmology

Cite this

@article{f088cd5758bd4c9eb380f21f57ad78e5,
title = "Power prediction for one-piece and three-piece intraocular lens implantation after cataract surgery in patients with chronic angle-closure glaucoma: A prospective, randomized clinical trial",
abstract = "Purpose: To assess the accuracy of intraocular lens (IOL) power prediction for cataract surgery in chronic angle-closure glaucoma (CACG) patients with different IOLs' implantation. Methods: This prospective randomized clinical trial included 45 eyes with CACG and 48 eyes with normal controls undergoing cataract surgery. In the CACG group, 23 eyes (51{\%}) had three-piece IOL implantation and 22 eyes (49{\%}) had one-piece IOL implantation. In the normal control group, 25 eyes (52{\%}) had three-piece IOL implantation and 23 eyes (48{\%}) had one-piece IOL implantation. Using the SRK/T formula, the mean difference between the predicted and actual postoperative spherical equivalent [mean absolute error (MAE)] was obtained and converted to natural logarithm (ln) for statistical analysis. The power of the implanted IOL was calculated to predict postoperative SE using three formulas: SRK II, Holladay II and Hoffer Q by post hoc analysis in each group. The predictive accuracy of each formula was analysed by comparing the lnMAE. Results: In the one-piece IOL group, there was no difference in lnMAE between the CACG and normal control group (p = 0.314). In the three-piece IOL group, the lnMAE of the CACG group was larger than that of the normal control group (p < 0.001). The lnMAEs calculated by the SRK/T formula were more accurate than the Holladay II (p = 0.045) and Hoffer Q (p = 0.042) formula in the CACG one-piece IOL group. Conclusions: Implantation of one-piece IOLs provides similar power prediction accuracy comparable to normal cataract patients; this result may be explained by the IOL haptic configuration or design.",
author = "Soolienah Rhiu and Lee, {Eun Suk} and Kim, {Tae Im} and Lee, {Hye Sun} and Kim, {Chan Yun}",
year = "2012",
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T1 - Power prediction for one-piece and three-piece intraocular lens implantation after cataract surgery in patients with chronic angle-closure glaucoma

T2 - A prospective, randomized clinical trial

AU - Rhiu, Soolienah

AU - Lee, Eun Suk

AU - Kim, Tae Im

AU - Lee, Hye Sun

AU - Kim, Chan Yun

PY - 2012/12/1

Y1 - 2012/12/1

N2 - Purpose: To assess the accuracy of intraocular lens (IOL) power prediction for cataract surgery in chronic angle-closure glaucoma (CACG) patients with different IOLs' implantation. Methods: This prospective randomized clinical trial included 45 eyes with CACG and 48 eyes with normal controls undergoing cataract surgery. In the CACG group, 23 eyes (51%) had three-piece IOL implantation and 22 eyes (49%) had one-piece IOL implantation. In the normal control group, 25 eyes (52%) had three-piece IOL implantation and 23 eyes (48%) had one-piece IOL implantation. Using the SRK/T formula, the mean difference between the predicted and actual postoperative spherical equivalent [mean absolute error (MAE)] was obtained and converted to natural logarithm (ln) for statistical analysis. The power of the implanted IOL was calculated to predict postoperative SE using three formulas: SRK II, Holladay II and Hoffer Q by post hoc analysis in each group. The predictive accuracy of each formula was analysed by comparing the lnMAE. Results: In the one-piece IOL group, there was no difference in lnMAE between the CACG and normal control group (p = 0.314). In the three-piece IOL group, the lnMAE of the CACG group was larger than that of the normal control group (p < 0.001). The lnMAEs calculated by the SRK/T formula were more accurate than the Holladay II (p = 0.045) and Hoffer Q (p = 0.042) formula in the CACG one-piece IOL group. Conclusions: Implantation of one-piece IOLs provides similar power prediction accuracy comparable to normal cataract patients; this result may be explained by the IOL haptic configuration or design.

AB - Purpose: To assess the accuracy of intraocular lens (IOL) power prediction for cataract surgery in chronic angle-closure glaucoma (CACG) patients with different IOLs' implantation. Methods: This prospective randomized clinical trial included 45 eyes with CACG and 48 eyes with normal controls undergoing cataract surgery. In the CACG group, 23 eyes (51%) had three-piece IOL implantation and 22 eyes (49%) had one-piece IOL implantation. In the normal control group, 25 eyes (52%) had three-piece IOL implantation and 23 eyes (48%) had one-piece IOL implantation. Using the SRK/T formula, the mean difference between the predicted and actual postoperative spherical equivalent [mean absolute error (MAE)] was obtained and converted to natural logarithm (ln) for statistical analysis. The power of the implanted IOL was calculated to predict postoperative SE using three formulas: SRK II, Holladay II and Hoffer Q by post hoc analysis in each group. The predictive accuracy of each formula was analysed by comparing the lnMAE. Results: In the one-piece IOL group, there was no difference in lnMAE between the CACG and normal control group (p = 0.314). In the three-piece IOL group, the lnMAE of the CACG group was larger than that of the normal control group (p < 0.001). The lnMAEs calculated by the SRK/T formula were more accurate than the Holladay II (p = 0.045) and Hoffer Q (p = 0.042) formula in the CACG one-piece IOL group. Conclusions: Implantation of one-piece IOLs provides similar power prediction accuracy comparable to normal cataract patients; this result may be explained by the IOL haptic configuration or design.

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