共查询到20条相似文献,搜索用时 15 毫秒
1.
PURPOSE: To document the findings of optical coherence tomography in eyes with tractional macular elevation associated with proliferative diabetic retinopathy, paying special attention to differentiating between tractional retinal detachment and retinoschisis. DESIGN: Observational case series. METHODS: We retrospectively reviewed images of optical coherence tomography obtained from 17 consecutive eyes (17 patients) with proliferative diabetic retinopathy without vitreous opacity and showing tractional macular elevation with or without foveal involvement. RESULTS: Tractional retinal detachment and retinoschisis could be differentiated in the cross-sectional images of optical coherence tomography. Retinoschisis with or without associated retinal detachment was observed in 16 of 17 eyes (94%), whereas retinal detachment was observed in only six of 17 eyes (35%). Five eyes showed both findings of retinal detachment and retinoschisis. CONCLUSIONS: Optical coherence tomography is useful for distinguishing tractional retinoschisis from retinal detachment in eyes with proliferative diabetic retinopathy and macular elevation. Tractional retinoschisis with or without retinal detachment is the most frequent pattern of tractional macular elevation in eyes with proliferative diabetic retinopathy. 相似文献
2.
3.
Iwasaki T Miura M Matsushima C Yamanari M Makita S Yasuno Y 《The British journal of ophthalmology》2008,92(5):713
Fourier-domain optical coherence tomography (OCT) was used to image the three-dimensional (3D) structures of the proliferative membrane in proliferative diabetic retinopathy. The case of a 51-year-old man with retinal detachment of the macula in his left eye is reported. The proliferative membrane covered the entire macular area. In the OCT image, the 3D structure of the proliferative membrane could be clearly visualised. The OCT image showed the presence of multiple adhesions between the retina and the proliferative membrane and separation of the proliferative membrane. The patient underwent three-port vitrectomy, and the extent and locations of the adhesions corresponded well with the findings during vitrectomy. Three-dimensional OCT is an effective tool for understanding the 3D structure of the proliferative membrane in diabetic retinopathy and is useful for training and planning of the surgical procedures in vitrectomy. To view the full report and accompanying video please go to: http://bjo.bmj.com/cgi/content/full/92/5/713/DC1. All videos from the BJO video report collection are available from: http://bjo.bmj.com/video/collection.dtl. 相似文献
4.
糖尿病性黄斑水肿的光学相干断层成像 总被引:2,自引:0,他引:2
目的:观察糠尿病性黄斑水肿(diabetic macular edema,DME)的光学相干断层成像(optical coherence tomography,OCT)图像特征,分析其黄斑视网膜厚度与视力的关系.方法:对50例80眼经检眼镜或荧光素眼底血管造影(fundus fluorescein angiography,FFA)检查确诊为糖尿病视网膜病变伴黄斑水肿的患者进行经黄斑中心凹水平和垂直线性扫描的OCT检查.结果:10眼表现为黄斑中心凹局限性水肿改变,21眼表现为黄斑中心凹囊样改变伴神经上皮层浆液性脱离,49眼表现为黄斑区视网膜神经上皮层弥漫性增厚.DME患者黄斑视网膜厚度与视力呈负相关关系(r=-0.60,P=0.000).结论:DME的主要OCT图像特征为黄斑视网膜弥漫性水肿、黄斑囊样水肿伴神经上皮层脱离和黄斑局限性水肿改变;DME患者黄斑水肿越严重,视力越差. 相似文献
5.
6.
Naresh Babu Piyush Kohli Chitaranjan Mishra Renu P Rajan Karthik Kumar Kim Ramasamy Reshma Dara C Chandra Lakshmi 《Indian journal of ophthalmology》2021,69(11):3302
Purpose:To evaluate the surgical outcome of full-thickness macular hole (FTMH) secondary to active fibrovascular proliferation (FVP) and tractional retinal detachment (TRD) in eyes with proliferative diabetic retinopathy (PDR), and factors influencing the outcome.Methods:This retrospective study included the patients who underwent vitrectomy for FTMH secondary to PDR TRD from 2016 to 2020. Anatomical and visual outcomes were analyzed after six months along with the factors predicting the final outcome and duration of subretinal fluid (SRF) resolution.Results:Group A (macula-off combined RD, i.e., tractional and rhegmatogenous) included 10 eyes, while group B (macula-threatening TRD) included eight eyes. The mean best-corrected visual acuity improved from logMAR 1.21 (Snellen equivalent: 20/324) to logMAR 0.76 (Snellen equivalent: 20/115) (P = 0.008). Seventeen patients gained ≥1 line(s) of vision. Mean visual gain in groups A and B was 3.7 ± 1.9 and 1.9 ± 1.1 lines, respectively (P = 0.051). MH closed in 88.9% eyes. Type 1 anatomical closure was achieved in 88.9% of eyes. At 6 months, SRF and central macular thickness reduced from 479.6 ± 512.5 μm to 11.4 ± 23.5 μm (P = 0.002) and 874.3 ± 422.6 μm to 207.6 ± 81.7 μm (P = 0.0002), respectively. Finally, macular SRF resolved in all the patients. The mean duration for complete SRF resolution was 4.9 ± 3.2 months. Eyes with a shorter duration of diabetes mellitus (rho = −0.49, P = 0.040) and macula-off combined RD (P = 0.048) took a longer time for complete SRF resolution.Conclusion:Good anatomical and visual outcomes can be achieved in eyes with PDR TRD-associated FTMH. The residual macular SRF resolves slowly after the surgery and extra intervention is not required. Macula-off combined RD is associated with worse outcome and a slower SRF resolution rate. 相似文献
7.
8.
9.
Optical coherence tomography and focal macular electroretinogram in eyes with epiretinal membrane and macular pseudohole 总被引:3,自引:0,他引:3
Suzuki T Terasaki H Niwa T Mori M Kondo M Miyake Y 《American journal of ophthalmology》2003,136(1):62-67
PURPOSE: To determine the morphology of macular pseudoholes (MPHs) and the relationship of morphology to macular function. DESIGN: Observational case series. METHODS: Optical coherence tomography (OCT) was performed on 42 eyes of 42 consecutive patients with an epiretinal membrane (ERM) and an MPH. The diameters of the MPH, and the thickness of the foveal and parafoveal retina were measured. Of these 42 eyes, focal macular electroretinograms (FMERGs) were recorded from 22 eyes of 22 patients with a 15 degree stimulus; FMERGs were also recorded with a 5 degree stimulus from 9 eyes of these 22 eyes. RESULTS: In 42 eyes, the mean +/- Standard deviation (SD) diameter (437.7 +/- 172.8 microm) and geometrical shape of the MPHs were not significantly correlated with the visual acuity. The MPHs were divided into 2 types from the OCT images at the base of MPHs; group A had normal thickness (100-199 microm; n = 29), and group B (n = 13) had thicknesses of >or= 200 microm, or thickness < 100 microm, or irregular base. The visual acuity in group A (logarithm of the minimum angle of resolution [log MAR] mean +/- SD:.083 +/-.144) was significantly better than group B (log MAR,.407 +/-.212, P <.0001). There was a significant reduction in the amplitude of all components of FMERGs elicited by the 15 degree stimulus in the affected eyes (mean +/- SE, A-wave: 1.26 +/-.12 microv, B-wave: 3.07 +/-.27 microv, oscillatory potentials: 1.23 +/-.25 microv) compared with the normal fellow eyes (A-wave: 1.58 +/-.13 microv, B-wave: 4.14 +/-.27 microv, oscillatory potentials: 2.35 +/-.29 microv). A significant correlation was found between the relative amplitudes of the B-wave elicited by the 5 degree stimulus and the visual acuity (r =.918, P =.0005). CONCLUSIONS: In eyes with an ERM and an MPH, the visual acuity is generally correlated with the OCT images. Macular function of eyes with an MPH resembles eyes with an ERM without an MPH. The effect of the ERM appears to be different on the base and parafovea of the MPHs. 相似文献
10.
目的:探讨增殖性糖尿病视网膜病变(PDR)经扁平部玻璃体切除(PPV)术后黄斑区视网膜、脉络膜血流的变化。方法:横断面研究。选取2020-09/2022-07在合肥市第二人民医院眼科诊断为单眼PDR并接受23G PPV手术治疗的患者35例35眼,所有患者均行扫频源光学相干断层扫描血管造影(SS-OCTA)检查,采用系统内置分析软件测量黄斑区3mm×3mm范围内视网膜、脉络膜血流参数,并分析其与术后最佳矫正视力(BCVA)的相关性。结果:术后随访1~22(平均9.72±6.67)mo,末次随访时,纳入患者PPV术眼鼻侧旁中心凹区域中层毛细血管层(ICP)灌注面积(FA)(0.31±0.06mm2)较对侧眼(0.38±0.05mm2)明显减少,颞侧旁中心凹区域深层毛细血管层(DCP)FA(0.19±0.08mm2)较对侧眼(0.27±0.07mm2)明显减少(均P<0.05),除颞侧旁中心凹区域,PPV术眼其他旁中心凹区域脉络膜血管指数(CVI)均较对侧眼显著降低(P<0.05)。PPV术眼... 相似文献
11.
12.
Optical coherence tomography angiography assessment of 577 nm laser effect on severe non-proliferative diabetic retinopathy with diabetic macular edema
下载免费PDF全文
![点击此处可从《国际眼科》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Zi-Jing Li Jian-Hui Xiao Peng Zeng Rui Zeng Xiang Gao Yi-Chi Zhang Yu-Qing Lan 《国际眼科》2020,13(8):1257-1265
AIM: To quantitatively evaluate the effect of the combined use of 577-nm subthreshold micropulse macular laser (SML) and multi-point mode pan retinal laser photocoagulation (PRP) on severe non-proliferative diabetic retinopathy (NPDR) with central-involved diabetic macular edema (CIDME) using optical coherence tomography angiography (OCTA).
METHODS: In this observational clinical study, 86 eyes of 86 NPDR patients with CIDME who underwent SML and PRP treatment were included. Images were obtained 1d before laser and post-laser (1d, 1wk, 1, 3, and 6mo) using AngioVue software 2.0. Best corrected visual acuity (BCVA, LogMAR), foveal avascular zone area (FAZ), choriocapillary flow area (ChF), parafoveal vessel density (PVD), capillary density inside disc (CDD), peripapillary capillary density (PCD), macular ganglion cell complex thickness (mGCCT), central macular thickness (CMT), and subfoveal choroidal thickness (ChT) were compared between pre- and post-laser treatment.
RESULTS: BCVA remained stable during 6mo post-laser therapy (pre-laser vs 6mo post-laser: 0.53±0.21 vs 0.5±0.15, P>0.05). PVD, ChF, ChT, CMT, and mGCCT significantly increased 1d post-laser therapy [pre-laser vs 1d post-laser: superficial PVD (%), 40.51±3.42 vs 42.43±4.68; deep PVD (%), 42.66±3.67 vs 44.78±4.52; ChF, 1.72±0.21 vs 1.9±0.12 mm2; ChT, 302.45±69.74 vs 319.38±70.93 μm; CMT, 301.65±110.78 vs 320.86±105.62 μm; mGCCT, 105.71±10.72 vs 115.46±9.64 μm; P<0.05]. However, PVD, ChF and ChT decreased to less than baseline level at 6mo post-laser therapy (pre-laser vs 6mo post-laser: superficial PVD (%), 40.51±3.42 vs 36.32±4.19; deep PVD (%), 42.66±3.67 vs 38.76±3.74; ChF, 1.72±0.21 vs 1.62±0.09 mm2; ChT, 302.45±69.74 vs 289.61±67.55 μm; P<0.05), whereas CMT and mGCCT decreased to baseline level at 6mo post-laser therapy (CMT, 301.65±110.78 vs 297.77±90.23 μm; mGCCT, 105.71±10.72 vs 107.05±11.81 μm; P>0.05). Moreover, FAZ continuously increased while CDD and PCD continuously decreased in 6mo after laser therapy. CMT and ChT had a significant positive correlation with ChF and PVD in most post-laser stages.
CONCLUSION: During a 6-month follow-up period after combined use of SML and PRP therapy, BCVA remained stable and there was a decreased trend in macular edema. Blood flow increased at 1d post-laser therapy and reduced at 6mo post-laser therapy. 相似文献
13.
Optical coherence tomography (OCT) is a noninvasive objective diagnostic technique that has become a powerful method for the clinical assessment of diabetic macular edema. It is a very useful imaging technique to diagnose and follow-up diabetic macular edema (DME). The present paper aims to present an overview of the principles, progress, and uses of OCT in the diagnosis and management of DME. 相似文献
14.
15.
16.
Chen Haiying Tan Mei Hong Pomerleau Dustin Chong Elaine W. Lim Lyndell L. Symons R. C. Andrew 《Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie》2020,258(3):653-661
Graefe's Archive for Clinical and Experimental Ophthalmology - Diabetic macular edema (DME) is a major cause of vision loss. Diabetes patients with mild macular edema and good visual acuity are... 相似文献
17.
18.
Ibrahim MA Sepah YJ Symons RC Channa R Hatef E Khwaja A Bittencourt M Heo J Do DV Nguyen QD 《Eye (London, England)》2012,26(3):454-462