Differences in cysts characteristics and related influence on the anatomical response after dexamethasone implant in diabetic macular oedema.
Eye (Lond)
; 36(6): 1329-1331, 2022 06.
Article
em En
| MEDLINE
| ID: mdl-34815531
ABSTRACT
PURPOSE:
To assess the clinical significance of suspended scattering particles in motion (SSPiM) and different cystic phenotypes in diabetic macular oedema (DME) treated with dexamethasone implant (DEX-i).METHODS:
A retrospective review of type 2 diabetic patients with DME treated with a DEX-i was conducted. Swept-source optical coherence tomography angiography (OCTA, PLEX Elite 9000) with a 3-mm volume cube was performed. Regions of interest were delineated with Fiji software (version 2.1.0/1.53.c) in the superficial vascular complex (SVC) and deep capillary plexus (DCP) at baseline, 2- and 4-months after DEX-i. SSPiM was defined as regions of variable reflectivity with a decorrelation signal. Without a detectable decorrelation signal, its counterpart was addressed as 'corpuscular,' while hyporeflective cysts were optical empty without hyperreflective material enclosed.RESULTS:
After treatment, the hyporeflective component demonstrated substantial reabsorption in the SVC (-95.4% at 2- and -84.4% at 4-months, p < 0.01 both) and DVC (-84.4%, 2-months), with a less critical decrease of the corpuscular component in the SVC (2-months -41.9%, p = 0.001 and 4 months -1.8%, p = 0.73), and not significant in the DVC. SSPiM did not significantly change in the SVC and DVC neither at 2- and 4-months (p > 0.05, all).CONCLUSIONS:
After a single DEX-i, the clearance of different cystic phenotypes proceeds with resorption of hyporeflective, followed by corpuscular components. SSPiM demonstrated minimal response, indicating a severe BRB breakdown that may require repeated treatment to reach a satisfactory anatomical response.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Edema Macular
/
Cistos
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Diabetes Mellitus
/
Retinopatia Diabética
Tipo de estudo:
Etiology_studies
/
Observational_studies
Limite:
Humans
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article