Corneal Curvature and Axial Length Values in Children with Congenital/Infantile Cataract in the First 42 Months of Life

Abstract

In the first 42 months of age, K(m) and AL are significantly different according to age. These findings have implications for the calculation of intraocular lens power in children.

Catarata congênita e do desenvolvimento: estudo do comprimento axial e da ceratometria em crianças brasileiras

“…These conditions probably influenced these values and their relationships with age and AL, generating a poor correlation (R 2 =0.11). These findings have already been described by other authors, who also found weaker relationships between K and age, with R 2 varying from 0.31 (17) to 0.20 (7) , as well as between K and AL (R 2 =0.32) (17) , despite the larger sample sizes. Due to the difficulty of obtaining these values, the measurement method used in the present study still seems to be the best manner to obtain K values; however, a device that allows more accurate measurements may establish prediction models with more precise estimates of K in relation to age and AL.…”

“…Two papers have described K and AL measurements in North American children with congenital cataract (5,17) . Further, a study in Italy showed the AL and K values of a Caucasian pediatric population with congenital/developmental cataract (7) . Databanks containing biometric information from eyes with pediatric cataract allow estimation of the ocular values of AL and K based on age.…”

“…Portable devices for biometric calculation may not be available for some of congenital/developmental cataract surgeons. Therefore, the selection of the IOL power at the time of implantation is based on tables of biometric measurements by age in normal eyes, which have biometric characteristics that may differ from the characteristics of eyes with cataracts, or on tables of biometric data in cataract eyes collected from populations in specific ethnicity (5,7) . The objective of this study was to evaluate the ocular axial length (AL) and keratometry (K) in Brazilian children with congenital/developmental cataract to assess the differences and evolution according to age as well as to establish functional models of AL and K in function of age and between K and AL.…”

Ocular biometry and central corneal thickness in children: a hospital-based study

“…The most striking aspect of our study was that it was not performed with postmortem subjects or with congenital cataract patients, as could be observed in some studies (2,3) .…”

Cataractes congénitales : correction de l’aphaquie par lentilles de contact rigides

“…Le pic de croissance oculaire a lieu la première année et la longueur axiale évolue rapidement, ce n'est qu'après trois ans que l'oeil atteint sa longueur quasiment définitive [14]. La kératométrie, quant à elle, se modifie très rapidement avec une stabilisation semblant plus précoce [15,16]. Le problème de la prédictibilité de la puissance de l'implant, selon l'âge de l'enfant, reste donc présent dans la prise en charge des cataractes congénitales.…”