Which of the following is an example of an anti-VEGF agent?

Ranibizumab is an anti-vascular endothelial growth factor (anti-VEGF) agent, specifically designed to inhibit the activity of VEGF, which plays a crucial role in the growth of new blood vessels, particularly in conditions like age-related macular degeneration and other retinal disorders. This medication works by binding to VEGF and preventing it from interacting with its receptors on the surface of cells, thus reducing pathological blood vessel growth and associated leakage.

Bevacizumab is another anti-VEGF agent, but it’s a larger molecule used primarily in oncology rather than ophthalmology, even though it is sometimes repurposed for eye conditions. Avastin is actually the brand name for Bevacizumab, so while related, it is not the correct answer in this context when referring specifically to an anti-VEGF drug used primarily for ophthalmic issues.

Famciclovir is an antiviral medication typically used to treat infections caused by certain viruses and does not have any role in VEGF inhibition.