Effect of trabeculectomy on the accuracy of intraocular lens calculations in patients with open-angle glaucoma.
Clin Exp Ophthalmol
; 44(6): 465-71, 2016 Aug.
Article
em En
| MEDLINE
| ID: mdl-26756926
ABSTRACT
BACKGROUND:
The objective of the study is to examine the effect of trabeculectomy on intraocular lens power calculations in patients with open-angle glaucoma (OAG) undergoing cataract surgery.DESIGN:
The design is retrospective data analysis.PARTICIPANTS:
There are a total of 55 eyes of 55 patients with OAG who had a cataract surgery alone or in combination with trabeculectomy.METHODS:
We classified OAG subjects into the following groups based on surgical history only cataract surgery (OC group), cataract surgery after prior trabeculectomy (CAT group), and cataract surgery performed in combination with trabeculectomy (CCT group). MAIN OUTCOMEMEASURES:
Differences between actual and predicted postoperative refractive error.RESULTS:
Mean error (ME, difference between postoperative and predicted SE) in the CCT group was significantly lower (towards myopia) than that of the OC group (P = 0.008). Additionally, mean absolute error (MAE, absolute value of ME) in the CAT group was significantly greater than in the OC group (P = 0.006). Using linear mixed models, the ME calculated with the SRK II formula was more accurate than the ME predicted by the SRK T formula in the CAT (P = 0.032) and CCT (P = 0.035) groups.CONCLUSIONS:
The intraocular lens power prediction accuracy was lower in the CAT and CCT groups than in the OC group. The prediction error was greater in the CAT group than in the OC group, and the direction of the prediction error tended to be towards myopia in the CCT group. The SRK II formula may be more accurate in predicting residual refractive error in the CAT and CCT groups.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Trabeculectomia
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Glaucoma de Ângulo Aberto
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Biometria
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Facoemulsificação
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Implante de Lente Intraocular
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Óptica e Fotônica
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Lentes Intraoculares
Tipo de estudo:
Diagnostic_studies
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Aged
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Aged80
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Clin Exp Ophthalmol
Assunto da revista:
OFTALMOLOGIA
Ano de publicação:
2016
Tipo de documento:
Article