que anteriormente podía representar una curiosidad o un dato intelectual para presumir, actualmente es imprescindible para el clínico. Esta revisión tiene por objetivo mencionar los elementos que a juicio de los autores son más relevantes de los aspectos anatómicos (histológicos) «nuevos» de la córnea y como impactan en las también relativamente nuevas técnicas quirúrgicas, enfatizando el papel que tiene la «capa de Dua». La composición del estroma corneal también varía de acuerdo a la profundidad. La obtención del tejido corneal varía de acuerdo a la técnica de disección empleada, si bien es cierto que en la pneumodisección quedan remanentes estromales predesceméticos, estos no constituyen una nueva capa anatómicamente. Las diferencias de hidratación y unión entre las láminas corneales hacen que la córnea se comporte de manera distinta dependiendo del plano de disección. Los cambios que suceden con la edad facilitan la procuración de la membrana de Descemet-endotelio al hacerse más gruesa y fácil de manipular.
The advance in the knowledge of corneal ultrastructure that previously would have been considered a curiosity or just intellectual data, today is essential for the clinician. The purpose of this review is to address the elements that, based on the authors´ criteria, are more relevant to the "new" anatomical (histological) aspects of the cornea and how they affect the relatively new surgical techniques, emphasizing the role of "Dua´s layer. " The composition of the corneal stroma also varies according to depth. Corneal tissue obtainment varies according to the dissection technique used, although it is true that in pneumodissection pre-descemet stromal remnants remain, but they do not constitute a new anatomical layer. The differences in hydration and disposition between the corneal lamellae cause the cornea to behave differently depending on the dissection plane. Age-related changes facilitate the procurement of the descemet-endothelium membrane, as it becomes thicker and easier to manipulate.
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