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New Approach for the Calculation of the Intraocular Lens Power Based on the Fictitious Corneal Refractive Index Estimation
المؤلفون المشاركون
Piñero, David P.
Fernández, Joaquín
Rodríguez-Vallejo, Manuel
Martínez, Javier
Tauste, Ana
المصدر
العدد
المجلد 2019، العدد 2019 (31 ديسمبر/كانون الأول 2019)، ص ص. 1-9، 9ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2019-05-14
دولة النشر
مصر
عدد الصفحات
9
التخصصات الرئيسية
الملخص EN
Purpose.
To identify the sources of error in predictability beyond the effective lens position and to develop two new thick lens equations.
Methods.
Retrospective observational case series with 43 eyes.
Information related to the actual lens position, corneal radii measured with specular reflection and Scheimpflug-based technologies, and the characteristics of the implanted lenses (radii and thickness) were used for obtaining the fictitious indexes that better predicted the postoperative spherical equivalent (SE) when the real effective lens position (ELP) was known.
These fictitious indexes were used to develop two thick lens equations that were compared with the predictability of SRK/T and Barrett Universal II.
Results.
The SE relative to the intended target was correlated to the difference between real ELP and the value estimated by SRK/T (ΔELP) (r = −0.47, p=0.002), but this only predicted 22% of variability in a linear regression model.
The fictitious index for the specular reflection (nk) and Scheimpflug-based devices (nc) were significantly correlated with axial length.
Including both indexes fitted to axial length in the prediction model with the ΔELP increased the r-square of the model up to 83% and 39%, respectively.
Equations derived from these fictitious indexes reduced the mean SE in comparison to SRK/T and Barrett Universal II.
Conclusions.
The predictability with the trifocal IOL evaluated is not explained by an error in the ELP.
An adjustment fitting the fictitious index with the axial length improves the predictability without false estimations of the ELP.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Fernández, Joaquín& Rodríguez-Vallejo, Manuel& Martínez, Javier& Tauste, Ana& Piñero, David P.. 2019. New Approach for the Calculation of the Intraocular Lens Power Based on the Fictitious Corneal Refractive Index Estimation. Journal of Ophthalmology،Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1185310
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Fernández, Joaquín…[et al.]. New Approach for the Calculation of the Intraocular Lens Power Based on the Fictitious Corneal Refractive Index Estimation. Journal of Ophthalmology No. 2019 (2019), pp.1-9.
https://search.emarefa.net/detail/BIM-1185310
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Fernández, Joaquín& Rodríguez-Vallejo, Manuel& Martínez, Javier& Tauste, Ana& Piñero, David P.. New Approach for the Calculation of the Intraocular Lens Power Based on the Fictitious Corneal Refractive Index Estimation. Journal of Ophthalmology. 2019. Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1185310
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1185310
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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