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A simple mathematical model of retinal reattachment after scleral buckling.

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Title: A simple mathematical model of retinal reattachment after scleral buckling.
Authors: Kheirandish, Sasan1,2 (AUTHOR), Repetto, Rodolfo1 (AUTHOR), Romano, Mario R.3 (AUTHOR), Alishahi, Mohammad M.2 (AUTHOR), Golneshan, Ali A.2 (AUTHOR), Abouali, Omid2 (AUTHOR), Pralits, Jan O.1 (AUTHOR) jan.pralits@unige.it
Source: Journal of Fluids & Structures. Nov2022, Vol. 115, pN.PAG-N.PAG. 1p.
Subjects: Sclera, Mathematical models, Fluid mechanics, Retinal detachment, Eye movements, Two-dimensional models, Mechanical buckling
Abstract: Rhegmatogenous retinal detachment (RRD) is a dangerous pathological condition that can lead to blindness and requires surgical treatment. Scleral buckling is a surgical technique that has been in use for many years to repair RRD. It consists in the application of a piece of silicone on the outer surface of the sclera, that pushes the eye wall inwards and modifies its curvature in correspondence of the retinal tear. It is observed that this facilitates retinal reattachment. Various authors speculated that basic principles of fluid mechanics can be invoked to explain the reattachment process, though a convincing explanation of the mechanics underlying the process is still elusive. In this study, we propose an idealized two-dimensional model of a detached retina, surrounded by liquefied vitreous and study its dynamics secondary to eye movements. This is done using an immersed boundary numerical code. The retinal flaps are modeled as slender one-dimensional elastic bodies, one extremity of which is clamped to the retinal wall. For simplicity we model the retina as a rigid, flat wall. We account for the presence of scleral buckling by inserting a wall bump underneath the detached filaments. We show that the dynamics of the detached filaments is very complicated and that the presence of a buckle significantly contributes to reduce the time averaged distance between the detached filaments and the wall, thus facilitating reattachment. The mechanisms involved are inherently associated with the dynamics of the filament. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Fluids & Structures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 160397154
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: A simple mathematical model of retinal reattachment after scleral buckling.
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  Data: <searchLink fieldCode="AR" term="%22Kheirandish%2C+Sasan%22">Kheirandish, Sasan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Repetto%2C+Rodolfo%22">Repetto, Rodolfo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Romano%2C+Mario+R%2E%22">Romano, Mario R.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Alishahi%2C+Mohammad+M%2E%22">Alishahi, Mohammad M.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Golneshan%2C+Ali+A%2E%22">Golneshan, Ali A.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Abouali%2C+Omid%22">Abouali, Omid</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pralits%2C+Jan+O%2E%22">Pralits, Jan O.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> jan.pralits@unige.it</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Fluids+%26+Structures%22">Journal of Fluids & Structures</searchLink>. Nov2022, Vol. 115, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Sclera%22">Sclera</searchLink><br /><searchLink fieldCode="DE" term="%22Mathematical+models%22">Mathematical models</searchLink><br /><searchLink fieldCode="DE" term="%22Fluid+mechanics%22">Fluid mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Retinal+detachment%22">Retinal detachment</searchLink><br /><searchLink fieldCode="DE" term="%22Eye+movements%22">Eye movements</searchLink><br /><searchLink fieldCode="DE" term="%22Two-dimensional+models%22">Two-dimensional models</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+buckling%22">Mechanical buckling</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Rhegmatogenous retinal detachment (RRD) is a dangerous pathological condition that can lead to blindness and requires surgical treatment. Scleral buckling is a surgical technique that has been in use for many years to repair RRD. It consists in the application of a piece of silicone on the outer surface of the sclera, that pushes the eye wall inwards and modifies its curvature in correspondence of the retinal tear. It is observed that this facilitates retinal reattachment. Various authors speculated that basic principles of fluid mechanics can be invoked to explain the reattachment process, though a convincing explanation of the mechanics underlying the process is still elusive. In this study, we propose an idealized two-dimensional model of a detached retina, surrounded by liquefied vitreous and study its dynamics secondary to eye movements. This is done using an immersed boundary numerical code. The retinal flaps are modeled as slender one-dimensional elastic bodies, one extremity of which is clamped to the retinal wall. For simplicity we model the retina as a rigid, flat wall. We account for the presence of scleral buckling by inserting a wall bump underneath the detached filaments. We show that the dynamics of the detached filaments is very complicated and that the presence of a buckle significantly contributes to reduce the time averaged distance between the detached filaments and the wall, thus facilitating reattachment. The mechanisms involved are inherently associated with the dynamics of the filament. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Fluids & Structures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.jfluidstructs.2022.103766
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      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Sclera
        Type: general
      – SubjectFull: Mathematical models
        Type: general
      – SubjectFull: Fluid mechanics
        Type: general
      – SubjectFull: Retinal detachment
        Type: general
      – SubjectFull: Eye movements
        Type: general
      – SubjectFull: Two-dimensional models
        Type: general
      – SubjectFull: Mechanical buckling
        Type: general
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      – TitleFull: A simple mathematical model of retinal reattachment after scleral buckling.
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            NameFull: Kheirandish, Sasan
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            NameFull: Repetto, Rodolfo
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            NameFull: Romano, Mario R.
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            NameFull: Alishahi, Mohammad M.
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            NameFull: Golneshan, Ali A.
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            NameFull: Abouali, Omid
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            NameFull: Pralits, Jan O.
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          Dates:
            – D: 01
              M: 11
              Text: Nov2022
              Type: published
              Y: 2022
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              Value: 08899746
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              Value: 115
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            – TitleFull: Journal of Fluids & Structures
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