Peripheral retinal dysfunction in diabetic macular edema.
Peripheral retinal dysfunction in diabetic macular edema.
复制标题
糖尿病黄斑水肿的周围视网膜功能障碍。
DOI:
10.1111/aos.15221
复制
发表时间:
2023
影响因子:
3.4
通讯作者:
Gardner,ThomasW
中科院分区:
文献类型:
--
作者:
Omari,Amro;Su,Lydia;Joltikov,KatherineA;Rao,RajeshC;Jayasundera,KanishkaThiran;Gardner,ThomasW
Dear Editor, Patients with diabetic macular edema (DME) are treated primarily with intravitreal anti-VEGF or steroid injections (Wells et al., 2015), yet 30%–40% of patients fail to fully respond to anti-VEGF treatments (Stewart, 2014). Current clinical evaluation of DME is based on the extent of retinal vascular lesions and macular status as judged by optical coherence tomography (OCT), but DR affects the entire retinal neurovascular unit, including neurons, blood vessels, glial, amacrine, and Müller cells (Antonetti et al., 2012). Incomplete responses to treatment in DME may be due to the influence of angiogenic factors in addition to VEGF, or on the state of the neurovascular retina producing those factors. Hence, the rationale for this study is that comprehensive assessment of the entire neurovascular unit, including the macula and midperipheral retina in DR and DME, may provide better understanding of the disease and leads to more effective treatment in the future.We employed functional and structural tests to examine the relationship between DME and peripheral visual field function in 23 subjects with DME (18 males, five females; mean age of 52.7 years; SD= 9.8) at the Kellogg Eye Center. Inclusion criteria included patients with a diagnosis of clinically significant DME as determined by a retinal specialist (based on both clinical exam and SD-OCT with macular cysts accompanied by retinal thickening). Exclusion criteria included any ocular or systemic disease other than DR that could affect vision, any previous intraocular surgery, previous treatment for diabetic retinopathy, or inability to provide written informed consent. Tests of central function included visual acuity and frequency doubling perimetry. Peripheral retinal function was tested using Octopus Perimetry, which tests up to 100 from the center of vision in the temporal field (assessing nasal retina), 70 in the nasal field (assessing temporal retina), 50 in the superior field (assessing inferior retina), and 70 in the inferior field (assessing superior retina). All subjects had OCT with measurements of central macular thickness and macular volume and colour fundus photography to grade the severity of DR. Relationships between central and peripheral vision were evaluated using Pearson correlation tests. Statistical significance was set at p< 0.05. Four patients had mild NPDR, 11 had moderate NPDR, five had severe NPDR, and three had non-high-risk PDR. Patients with DME had an average HbA1c of 10.2 mmol/L and a range of CMT 209–560 mm and macular volume of 2.97–17.01 mm3; mean ETDRS acuity was 80.7 letters. Patients had mean Octopus static peripheral perimetry