ABSTRACT
Objective:To evaluate the efficacy of combination therapy of intravitreal conbercept (IVC) with posterior sub-Tenon injection of triamcinolone acetonide (PSTA) in treating macular edema secondary to non-ischemic branch retinal vein occlusion (BRVO).Methods:A nonrandomized controlled study was conducted.Fifty-nine patients (59 eyes) diagnosed with macular edema secondary to non-ischemic BRVO were enrolled in Heping Hospital Affiliated to Changzhi Medical College from October 2016 to November 2019.The subjects were divided into IVC group (28 eyes) and combination therapy of IVC with PSTA group (IVC+ PSTA group for short) (31 eyes). IVC group received IVC 0.5 mg and IVC+ PSTA group received IVC 0.5 mg combined with PSTA 40 mg as the initial therapy, then a pro re nata (PRN) IVC administration was adopted for the two groups.The mean best corrected visual acuity (BCVA) converted to the logarithm of the minimum angle of resolution unit, central macular thickness (CMT) and intraocular pressure (IOP) before and 1, 3, 6 months after injection were measured and compared.The number of repeated IVC injections and relevant complications were recorded.This study adhered to the Declaration of Helsinki.The study protocol was approved by the Ethics Committee of Heping Hospital Affiliated to Changzhi Medical College (No.20160R9). Written informed consent was obtained from each subject prior to any medical examination.Results:There was a statistically significant difference in BCVA between the two groups among different time points ( Fgroup=0.464, P=0.498; Ftime=25.454, P<0.001). Compared with before injection, the BCVA of both groups was significantly improved at each time point after injection (all at P<0.001). There was a statistically significant difference in CMT between the two groups among different time points ( Fgroup=6.208, P=0.016; Ftime=155.505, P<0.001). The CMT of both groups at each time point after injection was significantly smaller than that before injection, and the CMT in IVC+ PSTA group at 1 and 3 months after injection was smaller than that in IVC group (all at P<0.05). There was a statistically significant overall difference in IOP between the two groups ( Fgroup=9.994, P=0.006; Ftime=2.679, P=0.056). At 1 and 3 months after injection, the IOP in IVC+ PSTA group was higher than that in IVC group, showing statistically significant differences (both at P<0.01). There were 4 eyes with an IOP higher than 21 mmHg (1 mmHg=0.133 kPa) in IVC+ PSTA group.Within the 6-month follow-up, the mean number of repeated IVC injections of IVC group was 1.25±0.93, which was higher than 0.61±0.72 of IVC+ PSTA group, and the difference was statistically significant ( P=0.039). No other ocular complication was observed in both groups. Conclusions:Combination therapy of IVC with PSTA is effective in improving the BCVA and macular edema of patients with macular edema secondary to non-ischemic BRVO.A single PSTA injection can enhance the effect of conbercept in reliving macular edema in early months and reduce the number of repeated conbercept injections in the short term.
ABSTRACT
PURPOSE: To evaluate posterior sub-Tenon injection of triamcinolone acetonide (TA) for recurrent diabetic macular edema (DME) after repeated intravitreal bevacizumab (IVB). METHODS: This is a retrospective interventional case series comprised of 35 eyes (32 patients) with recurrent clinically significant DME after two or more IVB treatments. All patients were administered TA 40 mg injections. Best-corrected visual acuity (BCVA), central macular thickness (CMT), and intraocular pressure (IOP) were reevaluated at months 1, 3, and 6. RESULTS: The baseline OCT showed five eyes with diffuse retinal thickening, 18 eyes with cystoid macular edema, and 12 eyes with serous retinal detachment. Mean BCVA improved at months 1 and 3, and mean CMT decreased at months 1 and 3. However, mean BCVA and CMT at six months was not different from baseline. Each DME pattern showed significant improvements in BCVA and CMT at three months. Mean IOP at months 1, 3, and 6 did not show any significant difference from baseline. No eyes showed complications including cataract progression or endophthalmitis. CONCLUSIONS: Posterior sub-Tenon injection of TA should be considered for patients with recurrent DME after repeated IVB. The studied eyes showed improvements in BCVA and CMT during three months in all of the three patterns of DME.
Subject(s)
Humans , Antibodies, Monoclonal, Humanized , Cataract , Endophthalmitis , Eye , Intraocular Pressure , Macular Edema , Retinal Detachment , Retinaldehyde , Retrospective Studies , Triamcinolone , Triamcinolone Acetonide , Visual Acuity , BevacizumabABSTRACT
PURPOSE: To investigate the result of posterior sub-tenon triamcinolone acetonide injection combined with panretinal photocoagulation (PRP) in patients with diabetic retinopathy. METHODS: A prospective study was performed on patients with diabetic retinopathy who required PRP. The study group consisted of 12 patients (12 eyes) of diabetic retinopathy without clinically significant macular edema (CSME) and 13 patients (13 eyes) with CSME. All patients were injected posteriorly with sub-tenon triamcinolone acetonide (40 mg) one week before PRP. During a six-month follow-up, best-corrected visual acuity, the development of macular edema, changes in fluorescein angiography, and related complications were monitored. RESULTS: During a six-month follow-up, visual acuity was well preserved in patients with diabetic retinopathy without CSME (12 eyes). Only one patient in this group experienced temporary macular edema at 3 months after combined therapy. In the CSME group (13 eyes), the visual acuities of seven patients (53.8%) increased, those of five patients (38.5%) remained same, and one patient's visual acuity (7.7%) decreased in a study period of six months. Fluorescein angiography showed that macular edema was resolved in most patients except in one patient in whom macular edema remained for up to 6 months. Complications from combined therapy occurred in two patients who showed slight and temporary increase of intraocular pressure. CONCLUSIONS: Combined treatment with posterior sub-tenon triamcinolone acetonide injection and PRP may provide benefits for patients with diabetic retinopathy who require urgent PRP by preventing exacerbation of macular edema.