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Visualization Techniques for Port Delivery System Refill-Exchange
Mitchell T Allphin1, Carl C Awh1
1Tennessee Retina, Nashville, TN, USA.
Purpose:
To describe methods for improving visualization of the port delivery system (PDS) with ranibizumab (Susvimo) during the refill-exchange procedure when visualization of the implant septum is compromised.
Methods:
Multiple methods of PDS visualization using external illumination were evaluated.
Results:
Transpupillary and transscleral illumination of the PDS reservoir body using various light sources improved visualization of the implant septum during the refill-exchange procedure.
Conclusions:
Indirect internal illumination of the PDS implant can facilitate visualization of the implant septum during the refill-exchange procedure, particularly when visualization is compromised by conjunctival edema, thickened Tenon capsule, or fibrous capsule formation.
