Accuracy of 3 new methods for intraocular lens power selection.
J Cataract Refract Surg
; 43(3): 333-339, 2017 03.
Article
en En
| MEDLINE
| ID: mdl-28410714
ABSTRACT
PURPOSE:
To evaluate the accuracy of 3 new methods for intraocular lens (IOL) power selection (Hill-Radial Basis Function [Hill-RBF] method, FullMonte method, and the Ladas Super Formula) compared with that of the Holladay 1 and Barrett Universal II formulas.SETTING:
Ophthalmology Department, Alfred Hospital, Melbourne, Australia.DESIGN:
Retrospective case series.METHODS:
Patients who had uneventful cataract surgery with insertion of the Acrysof IQ SN60WF IOL over 5 years were included in the study. Data obtained from the electronic medical record and the IOLMaster device were entered into the respective calculators using self-designed computer programs. Using optimized lens constants, the predicted refractive outcome using each of the 5 methods/formulas was calculated and compared with the actual refractive outcome to give the prediction error. Eyes were separated into subgroups based on axial length as follows short (≤22.0 mm), medium (>22.0 to <24.5 mm), medium-long (≥24.5 to <26.0 mm), and long (≥26.0 mm).RESULTS:
The study comprised 3122 eyes of 3122 patients. A statistically significant difference in the mean absolute prediction error (MAE) between the 5 methods for IOL power calculation was found (P < .001), with the Barrett Universal II formula being the most accurate. The Ladas Super Formula had the third lowest MAE, the Hill-RBF the fourth lowest MAE, and the FullMonte the highest MAE of the 5 methods assessed.CONCLUSION:
New methods for predicting the postoperative refraction failed to yield more accurate results than current formulas.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Extracción de Catarata
/
Implantación de Lentes Intraoculares
/
Lentes Intraoculares
Tipo de estudio:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Humans
Idioma:
En
Revista:
J Cataract Refract Surg
Asunto de la revista:
OFTALMOLOGIA
Año:
2017
Tipo del documento:
Article