RT Journal Article
T1 Computational Study of Aqueous Humor Dynamics Assessing the Vault and the Pupil Diameter in Two Posterior-Chamber Phakic Lenses
A1 Fernández Vigo, José Ignacio
A1 Macarro Merino, Ana
A1 Fernández Francos, Joaquín
A1 Pablo Gómez de Liaño, Lucia de
A1 Martínez de la Casa, Jose Maria
A1 García Feijoo, Julián
A1 Fernández Vigo, José Ángel
AB 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 μm) and the PI (single or double, 180 or 360 μm).Results: With a standard vault (350 μm) 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 μm and 17.3% in 180 μm) 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.
PB The Association for Research in Vision and Ophthalmology, Inc.
SN 0146-0404
YR 2016
FD 2016-09
LK https://hdl.handle.net/20.500.14352/18023
UL https://hdl.handle.net/20.500.14352/18023
LA eng
NO Submitted: May 10, 2016; accepted: July 15, 2016
DS Docta Complutense
RD 4 may 2024