Macular choroidal thickness after vitreoretinal surgery: Long-term effect of pars plana vitrectomy with and without encircling scleral buckling surgery

Gama, Ivo; Proença, Helena; Gonçalves, Arthur Lopes; Faria, Mun Yueh; Almeida, Lurdes; Bernardo, Thais Tavares; Couceiro, Rita; Monteiro-Grillo, Manuel

doi:10.1016/j.oftale.2017.03.023

Cited by 1 publication

(2 citation statements)

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“…In our subjects, the NL quadrant also correlated with average RNFL thickness. We feel it was because buckles were mostly placed in superior (21 subjects) or horizontal (three subjects) quadrants and the lower quadrant thus escaped any pressure effect from explants [6,7]. The GCC comprises the RNFL, the retinal ganglion cell layer, and the inner plexiform layer (thickness of all macular layers between the internal limiting membrane and the inner plexiform layer) [15]; and we found that magnitude of change in RNFL had a significant correlation with pre-operative GCC.…”

Section: Discussionmentioning

confidence: 99%

“…However, for promoting reattachment, it causes pressure effect in a circumferential manner onto the retinal layers with an encirclage band, buckle, and tight sutures [4]. The explants stretch the optic nerve [5], change the ocular blood flow [6], and interrupt choroidal venous drainage leading to ocular ischemia and peripheral field defect [7]. With modern diagnostic and surgical techniques, the success of detachment repair is >90%.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Predictors of Retinal Nerve Fiber Layer Parameters Following Scleral Buckling Surgery in Primary Rhegmatogenous Retinal Detachment

Sodhi¹,

Yadav²,

Shaw³

et al. 2022

Cureus

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Objective: This study aimed to examine predictors of retinal nerve fiber layer (RNFL) parameters following scleral buckling (SB) surgery for primary rhegmatogenous retinal detachment (RRD) and to determine the influence of the magnitude of change in qualitative and quantitative parameters on RNFL.Methods: In an observational prospective study, 40 subjects who underwent successful retinal reattachment with SB surgery done within one month of RRD were evaluated for the parameters of best-corrected visual acuity (BCVA), refractive error, intraocular pressure (IOP), axial length (AL), anterior chamber depth (ACD), angle opening distance (AOD 500 and AOD 750), trabecular iris surface area (TISA 500 and TISA 750), visual fields, and ganglion cell count (GCC) and RNFL before and three months after SB. We additionally noted qualitative factors like extent, location, and type of buckle; phakic status; and grade of proliferative vitreoretinopathy in the affected eye. The change in value of quantitative parameters was found. The influence of baseline values and magnitude of change of quantitative and qualitative parameters on average RNFL thickness and magnitude of change of RNFL thickness after SB was found.Results: Post-SB, average RNFL thickness reduced from 108.58±20.38 microns to 103.73±17.98 microns (p =0.042). The baseline temporal upper (TU), temporal lower (TL), and nasal lower (NL) RNFL thickness (p=0.01, p=0.02, p=0.01, respectively) and total deviation (TD) values of visual fields (p=0.01) correlated positively while baseline GCC gross loss of volume (p=0.01) correlated negatively with post-operative RNFL thickness. The TU, TL, and NL RNFL thickness (p=0.04, p=0.01, p=0.01, respectively) and average GCC (p=0.04) correlated negatively with the magnitude of change in RNFL. The magnitude of change in baseline parameters after surgery was correlated with the magnitude of change in average RNFL thickness. It was noticed that change in AL (p<0.01), TISA 500 (p=0.02), TISA 750 (p<0.01), GCC focal loss of volume (p=0.02), and temporal RNFL thickness (p<0.01) correlated positively while the change in refractive error correlated negatively (p=0.04). Except for the grade of proliferative vitreoretinopathy (PVR) (p=0.04), none of the qualitative parameters, including extent, type, and location of the buckle; and phakic status, had a significant association with post-operative average RNFL thickness or magnitude of its change.Conclusions: The predictors of average RNFL thickness following SB include AL; myopic shift; TISA; visual fields TD; average, TU, TL, and NL RNFL thickness; average GCC, gross and focal loss of volume; and grade of PVR. So an early surgery to prevent preoperative ganglion cell and RNFL loss and progression of PVR is recommended.

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Section: Discussionmentioning

confidence: 99%