Reduction of Foveal Avascular Zone After Vitrectomy Demonstrated by Optical Coherence Tomography Angiography.
angiography
faz
oct
retina
vitrectomy
Journal
Cureus
ISSN: 2168-8184
Titre abrégé: Cureus
Pays: United States
ID NLM: 101596737
Informations de publication
Date de publication:
07 Mar 2021
07 Mar 2021
Historique:
entrez:
15
3
2021
pubmed:
16
3
2021
medline:
16
3
2021
Statut:
epublish
Résumé
To investigate the effect of pars plana vitrectomy on foveal circulation, and in particular the foveal avascular zone (FAZ), using optical coherence tomography angiography (OCTA). This was a prospective, non-randomized, comparative case series of patients that underwent vitrectomy. Twenty-six eyes of 26 patients that underwent vitrectomy were studied postoperatively by OCTA. Our patients underwent 23 or 25G pars plana vitrectomy (PPV) for any posterior segment pathology. Three-dimensional OCTAs (DRI Triton Swept Source OCT; Topcon) of the capillary plexus were obtained three months post-operatively. The FAZ measurements of the fellow eyes were used as controls. Change in FAZ area between vitrectomized eyes and controls. From a total of 26 patients, 17 underwent vitrectomy due to retinal detachment (RD). Almost all patients demonstrated a statistically significant reduction in FAZ size based on the OCTA measurements. Τhe mean difference in FAZ size for the superficial capillary plexus (SCP) was -93.77 ± 71.73 μm and for the deep capillary plexus (DCP) -88.87 ± 75.41 μm, both statistically significant (p=0.000), while the amount of reduction in μm was the same for both SCP and DCP. The foveal avascular zone seems to be reduced following vitrectomy as shown by optical coherence tomography angiography. It is postulated that this may be the result of changes in the physiology of the vitrectomized eye, and that this change should be attributed to the removal of the vitreous itself rather than other structures such as the internal limiting membrane.
Identifiants
pubmed: 33717769
doi: 10.7759/cureus.13757
pmc: PMC7943050
doi:
Types de publication
Journal Article
Langues
eng
Pagination
e13757Informations de copyright
Copyright © 2021, Petrou et al.
Déclaration de conflit d'intérêts
The authors have declared that no competing interests exist.
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