Understanding the mechanism of retinal displacement following rhegmatogenous retinal detachment repair: A computer simulation model.
gas tamponade
pars plana vitrectomy
pneumatic retinopexy
retinal detachment
retinal displacement
Journal
Acta ophthalmologica
ISSN: 1755-3768
Titre abrégé: Acta Ophthalmol
Pays: England
ID NLM: 101468102
Informations de publication
Date de publication:
Aug 2022
Aug 2022
Historique:
revised:
09
10
2021
received:
11
07
2021
accepted:
11
10
2021
pubmed:
26
10
2021
medline:
9
7
2022
entrez:
25
10
2021
Statut:
ppublish
Résumé
Retinal displacement is common following rhegmatogenous retinal detachment (RRD) repair. A computer simulation was developed to assess forces applied by a gas tamponade of various sizes in the setting of pneumatic retinopexy (PnR) versus pars plana vitrectomy (PPV). Computer simulation model. The contact angle and pressure between the tamponade and the retina were calculated using interfacial tension and the densities of gas and vitreous. A simulation determined the dynamics of fluid motion in the subretinal space and calculated deformations of the retina. Bulk flow of fluid away from the tamponade in a direction along gravity stretched the retina and caused displacement in the simulations. Extent of displacement is attributable to the subretinal fluid layer thickness, and area of contact and contact pressure applied by the tamponade. Larger gas tamponades have greater contact pressure applied to the retina. Reducing gas bubble size from 93% to 6.25% with PPV versus PnR, there was a 79% reduction in the mean contact pressure (1.4 mmHg-0.29 mmHg), and a 93% reduction in the surface area of contact (11 cm This model provides a framework to study retinal displacement. Our findings suggest that proportional to their size, gas tamponades stretched the retina by displacing subretinal fluid following RRD repair.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e1163-e1171Subventions
Organisme : Canada Research Chair
ID : 950-231567
Informations de copyright
© 2021 Acta Ophthalmologica Scandinavica Foundation. Published by John Wiley & Sons Ltd.
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