PURPOSE We investigated the efficacy of intravitreal injections of anti-VEGF agents in a rat model of anterior ischemic optic neuropathy. METHODS We applied laser-induced photoactivation on the optic nerve head after intravenously administered rose bengal (RB). The rats immediately received an intravitreal injection of either ranibizumab or PBS. The density of retinal ganglion cells (RGCs) wa...

BACKGROUND Data comparing systemic exposure and systemic vascular endothelial growth factor (VEGF) suppression of ranibizumab, bevacizumab and aflibercept following intravitreal injection are lacking. METHODS Fifty-six patients with wet age-related macular degeneration received intravitreal ranibizumab (0.5 mg), bevacizumab (1.25 mg), or aflibercept (2.0 mg). Serum pharmacokinetics and plasma...

PURPOSE To study the prevalence of sustained intraocular pressure (IOP) elevation associated with intravitreal injection of anti-vascular endothelial growth factor (anti-VEGF) agents. METHODS Prospective comparative study. Non-glaucomatous patients scheduled to receive intravitreal injection of anti-VEGF therapy were recruited from an outpatient eye clinic, Songklanagarind Hospital between Ap...

Intravitreal injections of anti-vascular endothelial growth factor (VEGF) agents are widely used to treat neovascular age-related macular degeneration (nAMD). Although these treatments are effective, multiple injections have recently been recommended to ensure that there is a good long-term prognosis. However, sustained intraocular pressure (IOP) elevations have been reported to develop after m...

Intravitreal neovascular diseases are a major cause of blindness worldwide. It remains unclear why neovessels in many retinal diseases spread into the physiologically nonvascularized vitreous rather than into the ischemic retinal areas, where the angiogenic factors are released. Here we show that inducible nitric oxide synthase (iNOS) is expressed in the ischemic retina. Using iNOS knockout mic...

D iabetic macular oedema (DMO) is the leading cause of acquired visual loss in the working age population. The landscape for DMO treatment has changed significantly over the past decade. Macular laser has been reported to reduce the risk of moderate visual loss in seminal clinical trials from the 1980s, but relatively few patients achieved visual gain. With the advent of intravitreal pharmacoth...

Intravitreal injection of anti-VEGF drugs currently represents the standard of treatment for exudative age-related macular degeneration. Several therapeutic options including steroids, inhibitors of complement factors, anti-platelet-derived growth factor agents, new anti-VEGF drugs, designed ankyrin repeat proteins, sustained drug delivery devices as an alternative to intravitreal injections an...

We review articles describing intravitreal injection of anti-VEGF drug trials, while discussing the mechanisms of the action of anti-VEGF antibodies, and also evaluating their outcomes. Intraocular injections of anti-VEGF drug are considered to be an effective treatment for macular edema after retinal vein occlusion, however, recurrent/persistent edema is common. The recent reports may lead to ...

This article describes how to give an intravitreal injection of an anti-VEGF drug. At present, the majority of intravitreal injections are administered by doctors; however, experience in the UK has shown that trained nurses can give these injections as safely as ophthalmologists. The single most important thing to remember is that an intravitreal injection is an intraocular operation, and shoul...