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Anales de la Sociedad Mexicana de Oftalmología y Archivos de la Asociación Para Evitar la Ceguera en México

2009, Number 5

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Rev Mex Oftalmol 2009; 83 (5)

Cálculo del poder dióptrico de lentes intraoculares ¿Cómo evitar la sorpresa refractiva?

Prado-Serrano A, Nava-Hernández NG

Language: Spanish
References: 53
Page: 272-280
PDF size: 182.01 Kb.


ABSTRACT

Cataract surgery has evolved over time and is currently a refractive procedure; however, no matter the phacoemulsification technique, microincisions and other items, the success is strongly influenced by the correct calculation of the intraocular lens power. The most important factors are the biometry, that determines the eye axial length by contact and immersion techniques and also by optical coherence tomography, keratometry that measures the anterior corneal curvature, theoretical and empirical valid formulas for calculating IOL (being the 3rd generation SRK-T, Holladay, Hoiffer Q the most used) and also the predictability of these formulas that depends on the correct application of the A, SF and ACD constants which differ in each formula. Understanding this range of variables and apply this knowledge is indispensable for a successful surgical outcome and the visual results in every subject. Failure to do so results in a refractive surprise.


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