OCT-angiography in Diabetic Patients: Qualitative Changes of the Intermediate and Deep Capillary Plexuses After Resolution of Macular Edema by Intravitreal Pharmacotherapy
试验速览
- 阶段
- 不适用
- 发起方
- 入组人数
- 20
- 试验地点
- 1
- 主要终点
- OCT-angiography qualitative changes
研究概览
简要总结
Around the world there is an increasing incidence of diabetes mellitus, with millions of people affected. In this population, diabetic macular edema (DME) is the most common cause of visual impairment. While the visual impairment caused by EMD is variable, its early treatment can improve visual acuity and quality of life. The objective of this project is to use the new OCT-angiography technology, which evaluates macular capillary network without the need of intravenous injection of contrast, to assess macular microcirculatory network in its response to intravitreal pharmacological treatment of EMD. The resulting qualitative evaluation can be helpful in understanding the pathophysiology of visual loss associated with DME and in determining prognosis.
详细描述
Patients who participate in this study will be selected among adults treated at the Retina Clinic and Ocular Oftalmologia clinics and will be aware of all stages of the research, formalizing the approval of their participation by informed consent term. The tests will be performed after pupillary dilation with 2 eye drops of tropicamide 1% (Mydriacyl, Alcon Laboratories), in Cirrus 5000 HD-OCT devices (Carl Zeiss Meditec - Dublin USA). Image acquisition protocols Optic Disc Cube 200x200 and 512x128 Macular Cube will be used, with analysis by RNFL protocols and NGO Analysis Report and Macular Cube Analysis Report, respectively. Subjective analysis of the examinations will be performed by the three authors of this project independently and then compared between them.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Previous diagnosis of diabetes mellitus type 1 or 2;
- •Age equal or greater than 18 years;
- •At least one eye with diabetic macular edema and central thickness greater than or equal to 290 microns (female patients) or 305 microns (males) measured by OCT and subjected to intravitreal pharmacotherapy.
排除标准
- •Aphakic patients;
- •History of major eye surgeries (vitrectomy, cataract surgery, scleral buckle, other intraocular surgery) in the last 4 months;
- •Tractional retinal detachment involving the macula, vitreomacular traction syndrome or other concurrent macular diseases;
- •Advanced or uncontrolled glaucoma (according to the investigator's judgment); Evidence of angle neovascularization;
- •Presence of an eye condition (besides diabetic retinopathy) which, in the opinion of the investigator, may alter the visual acuity during the study course (e.g. venous or arterial retinal occlusions, uveitis or other ocular inflammatory diseases, neovascular glaucoma, etc.);
- •Significative cataract which, in the opinion of the investigator, may be decreasing visual acuity in 3 lines or more;
- •History of YAG Laser capsulotomy in the last 2 months;
- •Severe renal disease, defined as chronic renal failure requiring dialysis or a kidney transplant;
- •Blood pressure higher than 180/110 mmHg, acute myocardial infarction, other acute cardiac events requiring hospitalisation, stroke, transient ischemic attack or treatment for congestive heart failure;
- •Systemic treatment with anti-VEGF or pro-VEGF in the last 4 months.
结局指标
主要结局
OCT-angiography qualitative changes
时间窗: 12 months
Assess the OCT-angiography qualitative changes observed in intermediate and deep capillary networks in diabetic patients after the resolution of macular edema with intravitreal drug treatment
次要结局
未报告次要终点