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Inicio Archivos de la Sociedad Española de Oftalmología (English Edition) Macular choroidal thickness after vitreoretinal surgery: Long-term effect of par...
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Vol. 92. Issue 12.
Pages 577-584 (December 2017)
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Vol. 92. Issue 12.
Pages 577-584 (December 2017)
Original article
Macular choroidal thickness after vitreoretinal surgery: Long-term effect of pars plana vitrectomy with and without encircling scleral buckling surgery
Grosor coroideo macular después de la cirugía vitreorretiniana: efecto a largo plazo de la vitrectomía con y sin cerclaje escleral
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I. Gamaa,b,
Corresponding author
ivogama20@hotmail.com

Corresponding author.
, H. Proençaa,b, A. Gonçalvesa,b, M. Fariaa,b, L. Almeidaa,b, T. Bernardoa, R. Couceirob,c, M. Monteiro-Grilloa,b
a Servicio de Oftalmología, Clínica Universitaria de Oftalmología, Hospital Santa Maria, Centro Hospitalario Lisboa Norte, Lisboa, Portugal
b Facultad de Medicina, Universidad de Lisboa, Lisboa, Portugal
c Servicio de Oftalmología, Hospital de Vila Franca de Xira, Vila Franca de Xira, Portugal
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Figures (2)
Tables (3)
Table 1. Demographic and clinic characteristics of groups 1 and 2.
Table 2. Functional and biometric parameters of operated eyes (groups 1 and 2) and respective not operated fellow eyes (groups 3A and 3B) in last post-surgery observation.
Table 3. Macular choroidal thickness after vitreoretinal surgery (combined and pars plana vitrectomy surgery) and in fellow eyes.
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Abstract
Purpose

To evaluate the macular choroidal thickness (CT) of eyes subjected to pars plana vitrectomy (PPV) whether or not combined with encircling scleral buckling (ESB) surgery for primary rhegmatogenous retinal detachment repair at 6 months or more after surgery.

Methods

This observational study included: 15 eyes (15 patients) submitted to combined ESB+PPV; 15 eyes submitted to PPV and their respective 30 normal fellow eyes (FE). Two 6mm lineal perpendicular optical coherence tomography B-scans centered on the fovea with enhanced depth imaging were performed on each eye. CT was measured at several macular locations: subfoveal (SF-CT) and at a radius of 1, 2, and 3mm from the fovea. CTs of the eyes in the CE+PPV group were compared to CT in the PPV group and the CTs of all operated eyes were compared to the CTs of their FE.

Results

SF-CT of the eyes in the ESB+PPV group was significantly increased compared to their FE (p=0.001). CT at a radius of 1, 2, and 3mm from the fovea of the ESB+PPV group were significantly increased (p=0.001, p=0.005, and p=0.001, respectively). The SF-CT of the PPV group was similar to their FE (p=0.691). The SF-CT of the ESB+PPV group was significantly increased compared to SF-CT of the PPV group (p=0.019).

Conclusions

The CT of the eyes subjected to combined ESB and PPV was significantly increased at 6 months or more after surgery compared to the CT of their FE and to the CT of the eyes subjected to PPV alone, which could be explained by a venous engorgement caused by the ESB.

Keywords:
Encircling scleral buckling
Pars plana vitrectomy
Choroidal thickness
Choroidal blood flow
Ocular venous drainage
Resumen
Objetivo

Evaluar el espesor coroideo (EC) macular a largo plazo tras vitrectomía pars plana (VPP) con o sin cerclaje escleral (CE) para la reparación del desprendimiento de retina regmatógeno primario, después de al menos 6 meses de la cirugía.

Métodos

Estudio observacional que incluyó: 15 ojos (15 pacientes) que se sometieron al CE añadido a VPP; 15 ojos (15 pacientes) que se sometieron a VPP y los 30 ojos contralaterales (OC) normales. Se obtuvo, en cada ojo, con la tomografía de coherencia óptica enhanced depth imaging, 2 escáneres de una línea de 6mm perpendiculares, centrados en la fóvea. Se midió el EC en varios puntos maculares: subfoveal (EC-SF) y en un radio de 1, 2 y 3mm respecto a la fóvea. El EC de los ojos sometidos a CE+VPP se comparó con el EC de los OC respectivos y con el EC de aquellos sometidos a VPP.

Resultados

El EC-SF de los ojos del grupo CE+VPP fue significativamente mayor en comparación con los OC (p=0,001). Los EC en un radio de 1, 2 y 3mm respecto a la fóvea de los ojos operados estaban significativamente aumentados en los ojos del grupo CE+VPP (p=0,001, p=0,005 y p=0,001, respectivamente). El EC-SF de los ojos del grupo VPP y el EC-SF de los OC fue similar (p=0,691). El EC-SF de los ojos del grupo CE+VPP fue significativamente mayor que el EC-SF de los ojos del grupo VPP (p=0,019).

Conclusiones

El EC de los ojos sometidos a CE+VPP estaba aumentado después de al menos 6 meses de la cirugía, en comparación con el EC de los respectivos ojos adelfos y el EC de los ojos sometidos a VPP, lo que podría deberse a una reducción del drenaje venoso causada por el CE.

Palabras clave:
Cerclaje escleral
Vitrectomía pars plana
Grosor coroideo
Flujo sanguíneo coroideo
Drenaje venoso ocular

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