The Port Delivery System (PDS) is a reservoir system for Ranibizumab (Lucentis) and is currently under FDA clinical trials to test the device for efficacy and safety. The Port Delivery System continually releases Lucentis into the eye for a 24 week period and can be refilled.. Lucentis (ranibizumab) is an effective anti-VEGF medication that is currently delivered only intravitreal injection..