Susvimo: Lucentis Port Delivery

globe anatomy
anatomy of the eye (click on image to enlarge)

What is Lucentis therapy?

            Lucentis therapy is a treatment for wet-type macular degeneration.  It usually involves repeated injections of medication into the eye to stop abnormal, leaky blood vessels. It is now also available through port delivery (called Susvimo).  After a tiny reservoir is implanted in the eye at surgery, a painless injection to fill the port is performed every 6 months.     

How effective is Lucentis therapy?      

             Lucentis was proven in extensive studies to be very effective. In wet-type macular degeneration, a large study showed that monthly injections of Lucentis over a two-year period offered a 90% chance of stable or improved vision. Similar benefits are seen in other retinal conditions as well. Traditionally, therapy often starts with monthly injections until maximal vision is restored. Afterwards, the injections may be given less frequently to maintain stable vision. The Lucentis port delivery appears to be as effective as Lucentis monthly injections, but with fewer injections.    

What are the risks of Lucentis therapy? 

            Severe complications are very rare, but risks of Lucentis injection include bleeding, infection, retinal detachment, glaucoma, cataract, and loss of vision. There appears to be a small increased risk (1%) of stroke with Lucentis. The risk of stroke may be related to the older age of patients in which it is used. Pregnancy should be avoided while on Lucentis therapy. 

            The port delivery method (Susvimo) is associated with more adverse events (19%) compared with monthly Lucentis injections (6%). Among eyes with the implanted port, 5-10% had bleeding inside the eye causing floaters and blurred vision. The blood cleared over several weeks to months. In 5.4% of eyes with the implanted port, the conjunctiva (skin-like layer that covers the eye) does not remain intact overlying the implant and additional surgery is often needed.  In 1-2% of eyes with an implanted port, infection may occur.  This is a very serious event that requires surgery and may result in permanent loss of vision/loss of the eye. In 1-3% of eyes with an implanted port, a retinal detachment required additional surgery and sometimes resulted in loss of vision.  Non-infectious inflammation occurs in about 20% of implanted eyes; it usually responds to eye drops. The benefits of fewer injections with the port delivery method must be weighed against the risks involved with the port. It is the opinion of the author that the risks of the Susvimo port delivery may outweigh the benefits at this time for most patients. Newer medications (Vabysmo) are available that appear to last longer than other treatments such as Lucentis injections. Therefore, Susvimo port delivery may be unnecessary.

What do I expect after a Lucentis injection?

Be careful not to rub the eye after the injection because the eye may remain anesthetized for several hours. You may be given eye drops and instructions on how to use them. Physical activity is not limited after the injection. Tylenol or Ibuprofen may be used if there is discomfort, but severe pain should be reported to your doctor without delay. It is normal to experience a red area on the white of the eye, which disappears in one to two weeks. If you have any questions or concerns, please call the office. 

By Scott E. Pautler, MD

For a telemedicine consultation with Dr Pautler, please send email request to spautler@rvaf.com. We accept Medicare and most insurances in Florida. Please include contact information (including phone number) in the email. We are unable to provide consultation for those living outside the state of Florida with the exception of limited one-time consultations with residents of the following states: Alabama, Arkansas, Connecticut, Georgia, Minnesota, and Washington.

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