Active clinical trials for "Macular Edema"

One of the most frequent complications of diabetic retinopathy is diabetic macular edema. Recently, intravitreal bevacizumab and intravitreal triamcinolone were the most popular therapeutic modalities. However, as the long term effects of intravitreal bevacizumab and intravitreal triamcinolone on visual acuity and macular thickness have not been compared, it was the purpose of the present study to compare these treatment effects

The primary objective of the study is to assess the ocular and systemic adverse events of ranibizumab (Lucentis)for DME (diabetic macular edema) following previous treatment with intravitreal bevacizumab (Avastin).

Background: Diabetic macular edema is a common eye complication of diabetes. It causes the blood vessels in the retina at the back of the eye to leak, causing swelling. The macula is the center part of the retina that is important for seeing fine details and for tasks such as reading, driving, or sewing. Swelling of the macula leads to vision loss and possible blindness. Inflammation may play a role in diabetic macular edema. It is also possible that there is a problem with the blood vessels and the blood supply to cells of the retina. A chemical in the body called vascular endothelial growth factor (VEGF) is important in the formation of blood vessels in the body. Lowering VEGF levels may help treat diabetic macular edema by reducing abnormal leaking blood vessels in the eye. Drugs that can lower or block VEGF include ranibizumab and bevacizumab. Both drugs have been shown to help treat diabetic macular edema. Researchers want to see if one of the drugs works better than the other. Objective: To compare the effectiveness of ranibizumab and bevacizumab injections for diabetic macular edema. Eligibility: Individuals at least 18 years of age who have diabetic macular edema in at least one eye. Design: Participants will be screened with a physical exam and medical history. A full eye exam will be performed. Blood and urine samples will be collected. One eye will be selected as the study eye to receive treatment. If both eyes are affected, both eyes may be enrolled in the study and receive different drug treatments. The main part of the study will last for 9 months. At each study visit, participants will have physical exams and eye exams. They will answer questions about their health and any side effects from the drugs. Participants will be assigned to one of four groups. Two groups will have two series of ranibizumab and one series of bevacizumab shots. The other two groups will have two series of bevacizumab and one series of ranibizumab shots. A series is three eye injections of the same drug every 4 weeks. The injections will be given at these study visits. The series order will vary for the different groups. After 9 months, participants will continue to have additional study visits. If the treatment seems to be successful, the study doctor may increase the time between visits. Study injections may be given as needed every 4 weeks for up to 3 years. Participants may have laser treatments in a study eye if needed. After being in the study for 1 year, they may also have steroid injections or other treatments as directed for the macular edema.

This study is a Phase I/II, multicenter, randomized, study of the efficacy and safety of ranibizumab injection monotherapy verses a duel therapy of 0.3mg ranibizumab combined with ultra wide, 200° field angiography guided pan retinal photocoagulation in patients with CSME-CI secondary to diabetes mellitus (Type 1 or 2).

The purpose of this study is to characterize the systemic and ocular safety and tolerability, pharmacokinetics, exploratory efficacy and pharmacodynamics of 3 months of repeat administration of oral darapladib in diabetic macular edema patients with centre involvement.

Background: - Some people with retinitis pigmentosa (RP) have macular edema (swelling) in the central retina. This can cause decreased central vision. The cause of macular edema is unknown, but may involve inflammation. The drug minocycline might help prevent inflammation and therefore might help treat macular edema and improve central visual function . Objectives: - To see if minocycline helps people with RP and macular edema. Eligibility: - People 12 years and older with RP who have macular edema in at least on eye. Design: Participants will be screened with medical and eye disease history. They will have an eye exam and blood tests. One eye with macular edema will be the study eye. If both eyes are affected, one will be designated the study eye. Participants will visit the clinic at least 9 times over at least 14 months. The first 3 study visits will be monthly, then every 2 months. Participants will start taking minocycline after visit 3. They will take 1 pill twice daily for at least 1 year. Participants will keep a medicine diary and bring it to each visit with their pill bottle and unused pills. At each study visit, participants will have some or all of the following tests: eye and thyroid exams blood and pregnancy tests microperimetry: participants will press a button when they see a light on a computer screen visual field measurement: participants will look at spots on a white screen to test side vision electroretinogram: A person will be dark adapted by sitting in the dark for 30 minutes. After the placement of numbing eye drops, special contact lenses will be placed . The participant will watch flashing lights and recordings will be made.

Ranibizumab is a humanized anti-vascular endothelial growth factor (VEGF) monoclonal antibody fragment approved in Chile by the Instituto de Salud Pública for the treatment of diabetic macular edema (DME), retinal vein occlusion and age-related macular degeneration. Currently, there is limited epidemiologic information in Chile regarding the incidence of DME and limited experience of anti-VEGF hospital therapy. This study will evaluate the efficacy of intravitreal ranibizumab in Chilean DME patients, to investigate the anatomical and functional improvement following this treatment and to increase the local experience regarding the use of anti-VEGF in the treatment of diabetic macular edema.

Study of efficacy and safety of 0.5 mg ranibizumab in Chinese patients with diabetic macular edema (DME)

The purpose of the study is to determine the effect of Intravitreal Aflibercept Injection (IAI) on previously treated Central Retinal Vein Occlusions (CRVOs) with other Anti-VEGF agents.

This study will asses sthe safety of pegaptanib sodium in patients with diabetic macular edema. The hypothesis is that pegaptanib is safe and efficacious in patients with diabetic macular edema.