| Título: | Computational Study of Aqueous Humor Dynamics Assessing the Vault and the Pupil Diameter in Two Posterior-Chamber Phakic Lenses |
| Autores: | Fernández Vigo, José Ignacio ; Macarro Merino, Ana ; Fernández Francos, Joaquín ; Pablo Gómez de Liaño, Lucía de ; Martínez de la Casa, Jose Maria ; García Feijoo, Julián ; Fernández Vigo, José Ángel |
| Tipo de documento: | texto impreso |
| Editorial: | The Association for Research in Vision and Ophthalmology, Inc., 2016-09 |
| Dimensiones: | application/pdf |
| Nota general: |
cc_by_nc_nd info:eu-repo/semantics/openAccess |
| Idiomas: | |
| Palabras clave: | Estado = Publicado , Materia = Ciencias Biomédicas: Medicina: Cirugía , Materia = Ciencias Biomédicas: Medicina: Oftalmología , Materia = Ciencias Biomédicas: Óptica y optometría: Optometría , Tipo = Artículo |
| Resumen: |
Purpose: To compare the behavior of aqueous humor (AH) and analyze flow differences by comparing the volume and velocity of the flow after two different models of implantable collamer lens (ICL) placement. Methods: Computational fluid dynamics with numerical simulation using Ansys Fluent software was performed to compare the AH flow through a peripheral iridotomy (PI), which is typically performed after implantation of a V4b lens to the central hole of a V4c lens. The volume and flow rate in 24 scenarios were compared according to the type of lens, pupil diameter (PD) (3.5 or 5.5 mm), the vault (100, 350, and 800 ?m) and the PI (single or double, 180 or 360 ?m). Results: With a standard vault (350 ?m) and a PD of 3.5 mm, the volume of AH that flows from the posterior to the anterior chamber through the PI (V4b lens: 73.4% in 360 ?m and 17.3% in 180 ?m) and for the central hole (V4c lens: 75.7%) is larger than in the case of a PD of 5.5 mm (13.9%, 0.91%, and 15.3% respectively). When the vault is low (100; PD 3.5 mm), the volume of AH that reaches the central hole of the V4c lens is diminished (52.0%), being 5.1% if the pupil is enlarged. Conclusions: AH flow varies depending on the type of ICL implanted, whether it is implanted with an iridotomy or a central hole on the lens, the PD, and the vault. |
| En línea: | https://eprints.ucm.es/44368/1/computational_IOVS%202016.pdf |
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