View clinical trials related to Macular Degeneration.
Filter by:The purpose of the study is to compare photodynamic therapy to transpupillary thermotherapy as a treatment method for choroidal neovascularization in age-related macular degeneration ( AMD). AMD is a disease affecting the macula, the central area of the retina.There are two main types of AMD. Geographic atrophy ( dry) AMD and neovascular ( wet) AMD. In neovascular AMD, sub-retinal neovascular membranes ( new blood vessels) develop beneath the retina. The new vessels can leak causing haemorrhage that leads to significant visual loss. Photodynamic therapy ( PDT) is a method for treating neovascular membranes without affecting the retina. Photoactive chemicals are injected into the patient and irradiated with light as the pass through the neovascular membranes. This light is strong enough to activate the chemicals, that destroy the blood vessels, but not strong enough to cause damage to the overlying retina. The duration of the treatment is 83s. PDT treatment is effective in predominantly classic subfoveal choroidal neovascularization ( CNV), but was observed to yield no visual benefit in minimally classic CNV during a 2-year follow-up and as to occult CNV the effect was scarce. PDT does have its drawbacks, one of which is the cost. Another is that the patient become highly sensitive to strong light. Transpupillary thermotherapy ( TTT) is a thermic treatment of choroidal neovascularization in AMD. Using a thermal diode laser ( emission 810 nm), transpupillary irradiation of the fundus through a conventinal contact lens is performed. The temperature is elevated < 10 degrees C during a 60s exposure to continuous radiation. The laser power is adjusted to the diameter of the laser beam. In a pilot study, Reichel et al. ( 1999) demonstrated that subfoveal occult CNV could be occluded and visual acuity stabilized in a majority of patients treated with TTT. These results has been confirmed in small series of cases with occult CNV and with minimally ( <50%) classic CNV. This prospective, randomized controlled study aim to compare TTT and PDT as a treatment for occult and minimally classic CNV. A total of 140 patients will be included in the study. Follow up is 2 years. The patients included will be followed as to visual acutiy ( ETDRS), new vessel growth ( fluorescien angiography and ICG), OCT and with a quality of life questionnarie.
The objective of this study is to evaluate the safety and preliminary efficacy of three doses of Cand5. Cand5, a small interfering RNA molecule that selectively silences the mRNA encoding for VEGF.
This is a Phase IIIb, single-masked, 1-year multicenter study of the safety and tolerability of intravitreally administered ranibizumab in subjects with active subfoveal CNV secondary to AMD.
To evaluate the safety and efficacy of the combination treatments in wet age-related macular degeneration. The combination treatment consists of verteporfin photodynamic therapy and either triamcinolone acetonide or pegaptanib added as an intravitreal injection.
This study will examine the safety and efficacy of pegaptanib sodium in Japanese patients with wet-type age-related macular degeneration (AMD), who benefit further treatment and who want to continue the treatment after completion of the preceding study (A5751010).
This study will evaluate visual improvement in patients treated with Immune Globulin Intravenous (Human), 10% Caprylate/Chromatography Purified (IGIV-C) or placebo who have Age-Related Macular Degeneration (AMD) with occult Choroidal Neovascularization (CNV).
The objectives of this study are to characterize the safety, tolerability and pharmacokinetics of pegaptanib when given as 1 or 3mg/eye intravitreous injections every 6 weeks for 54 weeks in patients with subfoveal choroidal neovascularization (CNV) secondary to AMD.
A compassionate method of treatment is offered to patients where lesions do not meet acceptable criteria for standard therapy. Visudyne (Photodynamic Therapy) and laser photocoagulation treatment (a treatment using heat from a fine point laser beam) have not been found to be effective in treating the lesions these patients have. Anecortave acetate is an experimental drug that is being tested to prevent the growth of blood vessels under the retina in patients with age-related macular degeneration (AMD).
The purpose of this study is to provide compassionate use of anecortave acetate sterile suspension of 15 mg for a series of five patients as a means to control classic neovascularization following failure of treatment with photodynamic therapy using Visudyne.
The purpose of this study is to evaluate the safety of combining juxtasclerally administered anecortave acetate 15 mg with triamcinolone acetate 4 mg administered intravitreally following photodynamic therapy with verteporfin for the treatment of exudative age-related macular degeneration (AMD).