Patients treated with ecabet sodium demonstrated a strong positive trend in the objective sign of tear film break-up time and a positive trend in the objective sign of quantity of tears produced in a phase IIb study conducted by ISTA Pharmaceuticals.
Vascular endothelial growth factor antagonists will have greater potency, less specificity, ophthalmologist predicts
Antagonists of vascular endothelial growth factor provide a benefit for choroidal neovascularization and are promising for other retinal diseases, but they represent only the beginning of a transformation in the treatment of certain eye diseases, according to one ophthalmologist.
A phase 1 trial of rapamycin (Sirolimus, MacuSight) indicated that the drug is safe and has biologic activity in patients with diabetic macular edema when injected intravitreally and subconjunctivally.
One year follow-up results of a small study of ranibizumab (Lucentis, Genentech) in patients with nonischemic retinal vein occlusion show that all treated patients gained VA or that VA remained stable, although this improvement was accompanied by decreases in contrast sensitivity and reading ability.
JPE1375 (Jerini Ophthalmic), a peptidomimetic inhibitor of the complement factor 5a receptor, blocks the mechanism that draws inflammatory cells into the disease process of age-related macular degeneration. When blocked, the numbers of neutrophils and macrophages decrease substantially and in turn the choroidal neovascularization also decreases.
A topical eye drop (OT-551, Othera) is being investigated to treat geographic atrophy in dry age-related macular degeneration. The treatment is an antioxidant that in vitro protects against antioxidative damage and in vivo protects against light damage. One-year data are expected to be reported in the spring.
Oral fenretinide (Sirion Therapeutics) is being investigated in a phase II study as a treatment for advanced geographic atrophy associated with age-related macular degeneration. It is hypothesized that this agent may limit disease progression by preventing delivery of circulating retinol to the eye, thereby reducing the accumulation of retinol-derived metabolites that are toxic to the retinal pigment epithelium and photoreceptor cells.
Anti-vascular endothelial growth factor agent provides anatomic, functional recovery after central retinal vein occlusion
In a small retrospective study, eyes receiving intravitreal bevacizumab (Avastin, Genentech) within 3 months of a central retinal vein occlusion showed rapid improvement in anatomic abnormalities and subsequent improvement in vision. The benefits were maintained with repeated injections after a mean follow-up of 1 year.
Induction-maintenance therapy shows promise for neovascular age related macular degeneration treatment
Employing a therapeutic approach consisting of pan-vascular endothelial growth factor (VEGF) blockers such as ranibizumab (Lucentis, Genentech) and/or bevacizumab (Avastin, Genentech) as an induction therapy, followed by a selective VEGF blocker such as pegaptanib (Macugen, OSI/Eyetech) as a maintenance therapy, appears to be effective in patients with neovascular age-related macular degeneration, according to the interim results of the LEVEL study. This approach may be preferred for many patients from the standpoint of systemic safety.
The fixed combination of brimonidine and timolol (Combigan, Allergan) provided greater overall patient comfort, and IOP decreased significantly, compared with the fixed combination of dorzolamide and timolol (Cosopt, Merck & Co.) in patients with primary open-angle glaucoma.