Hi, Thanks for sharing your story and photos. 1. Firstly, It is difficult to make definitive recommendations from the history and photos posted. A thorough clinical exam is needed to determine the nature of the swelling and overall eye aesthetics. 2. Under eye filler injection may lead to lymphedema. With lymphedema, the lymphatic channels of the lower eyelid are flooded with filler and unable to do their job in draining fluid from the surrounding areas. This leads to swelling that may fluctuate. The best way to overcome or correct lymphedema is to dissolve the excess filler. 3. The under eye area is quite delicate and I would be careful about injecting more material (be it fat or filler) to "chase" the current fullness. It may lead to an unnatural, puffy look. It's difficult to reverse this, especially if fat is used. 4. My general approach would be to consider: a) Conservative hyaluronidase injection to first dissolve the filler fullness. b) If you're left with unsatisfactory hollowing or contour issues after, I'd likely re-inject more filler. Seems counterintuitive, but filler injection technique and location of filler placement matter! It's important to inject from below, preferably with a blunt cannula, for a filling effect that abuts and lifts up/into the tear trough hollowing rather injecting directly into the hollowing and thereby running the risk of injecting into the delicate lower lid tissues (cue in tyndell effect and lymphedema). Additionally, filler selection matters! Side note - while hyaluronidase is a game changer for reversing unfavorable effects of hyaluronic acid (HA) filler injections, it will dissolve your native HA too. It's important to be conservative and do serial injections, if needed. Be sure your injector knows how to dose and treat your problem areas. Perhaps a long-winded answer but I hope this helps with your question about hyaluronidase injection for under eye swelling after filler injection. Thanks and take care Dr. GhorabSaba Plastic SurgeryScottsdale, AZ This is a good question and an issue that I'm quite familiar