Comparison of Reduced Fluence Versus Standard Photodynamic Therapy (in Combination With Intravitreal Triamcinolone Acetate)
试验速览
- 阶段
- 3 期
- 状态
- 已完成
- 入组人数
- 40
- 试验地点
- 2
- 主要终点
- • Chorioretinal perfusion. • Perfusion of the neovascular net (CNV). • Changes of intraretinal morphologies. • Central visual function.
研究概览
简要总结
To assess the CNV treatment effect of PDT with verteporfin in combination with IVTA using reduced fluence compared to the standard fluence.
详细描述
Age-related macular degeneration (AMD) is by far the most common disorder in the group of irreversible causes of visual disability. AMD leads to dysfunction and loss of photoreceptors in the central retina. Neovascular AMD affects visual function early in the disease process and severely compromises the highly developed functions of the macula, such as perception of details, central fixation, color vision, and reading ability. AMD-related visual impairment is associated with a loss of autonomy and quality of life. Currently, laser photocoagulation, photodynamic therapy (PDT) with verteporfin usually combined with intravitreal triamcinolone acetonide (IVTA) are the only proved treatments for subfoveal choroidal neovascularisation (CNV). Laser photocoagulation is limited to selected cases. Photodynamic therapy using verteporfin provides very promising data regarding improvement of visual acuity and absence of fluorescein leakage. PDT was recently successfully combined with an intravitreal injection of the corticosteroid triamcinolone acetonide. Yet, PDT also leads to damage to surrounding normal choroidal vessels. A pilot trial comparing low fluence (300 mW/cm²) with standard fluence (600 mW/cm²) demonstrated a trend for improved outcomes using the low fluence regimen (VIM study). However, vascular mechanisms and choroidal damage were not examined, and the study group was too small to evaluate vision outcome parameters. Combined with the IVTA, the low fluence effects of PDT may be sufficient for CNV occlusion and the physiological choroids should be spared from any collateral damage. The aim of this study was to compare reduced fluence with standard fluence PDT using verteporfin and IVTA for CNV secondary to AMD.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Double (Participant, Investigator)
入排标准
- 年龄范围
- 50 Years 至 90 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- 未提供
排除标准
- •Prior treatment in the study eye with verteporfin, external-beam radiation therapy, subfoveal focal laser photocoagulation, vitrectomy, submacular surgery, or transpupillary thermotherapy.
- •Previous or current intravitreal drug delivery (e.g., intravitreal corticosteroid injection or device implantation) in the study eye.
- •Laser photocoagulation (juxtafoveal or extrafoveal) in the study eye within one month preceding Visit
- •History of glaucoma filtration surgery, corneal transplant surgery or extracapsular extraction of cataract with phacoemulsification within six months preceding Visit 1, or a history of post-operative complications within the last 12 months preceding Visit 1 in the study eye (uveitis, cyclitis etc.).
- •History of uncontrolled glaucoma in the study eye (defined as intraocular pressure ≥ 25 mmHg despite treatment with anti-glaucoma mediation).
- •Aphakia or absence of the posterior capsule in the study eye.
- •Presence of a retinal pigment epithelial tear involving the macula in the study eye.
- •Any concurrent intraocular condition in the study eye (e.g., cataract or diabetic retinopathy) that, in the opinion of the investigator, could either require medical or surgical intervention during the three-month study period to prevent or treat visual loss that might result from that condition.
- •Active intraocular inflammation (grade trace or above) in the study eye.
- •Any active infection involving eyeball adnexa.
- •Vitreous hemorrhage or history of rhegmatogenous retinal detachment or macular hole (Stage 3 or 4) in the study eye.
- •Ocular conditions that require chronic concomitant therapy with systemic or topical ocular corticosteroids. Chronic concomitant therapy is defined as multiple doses taken daily for three or more consecutive days at any time within six months prior to screening or during the course of the study.
结局指标
主要结局
• Chorioretinal perfusion. • Perfusion of the neovascular net (CNV). • Changes of intraretinal morphologies. • Central visual function.
时间窗: one year
次要结局
- macular sensitivity, three dimensional optical coherence tomography(one year)
研究者
Stefan Sacu
Assoc. Prof. PD Dr.
Medical University of Vienna