The Tyndall Effect

When hyaluronic acid filler sits too close to the surface beneath the thin under-eye skin, it can scatter blue wavelengths of  light, creating a bluish discoloration. This phenomenon is known as the Tyndall effect. 

The discoloration cannot be concealed with makeup and is a common complication of superficial tear trough filler placement.

Filler Migration

Filler placed in the tear trough does not always remain where it was injected. Over time, it can migrate, collecting along the lower eyelid and cheek junction. This may lead to puffiness, lumps, and a heavy or “overfilled” appearance. Additional filler treatments can compound the issue, making the area appear increasingly swollen rather than refreshed.

Vascular Occlusion

There is also the issue of vascular occlusion – the single most dangerous complication in aesthetic medicine. The under-eye area has a dense network of small vessels. Filler injected by an inexperienced provider can occlude these vessels, leading to skin necrosis and, in rare but documented cases, blindness.

The aesthetic industry has done an exceptional job of marketing filler as a simple, reversible, lunchtime treatment. The reality is considerably more nuanced – especially in the under-eye zone.

“It’s completely reversible with hyaluronidase.”

While hyaluronic acid filler can be dissolved with hyaluronidase, it is not always a simple one-time process. In many cases, achieving the desired result requires multiple treatment sessions, and the total cost can add up to thousands of dollars

“Under-eye filler lasts for years.”

The under-eye is a highly dynamic area. While some filler may persist for years, the visible cosmetic effect often changes much sooner due to facial movement, swelling, and migration. Many patients seek additional treatment every 6–9 months, leading to gradual accumulation of filler over time.

“I just need a tiny amount.”

The tear trough is anatomically shallow, and even very small amounts of filler can produce an overfilled appearance. Initial swelling after treatment may temporarily mask overcorrection, making the final result difficult to assess until the filler has settled.

“Any experienced injector can do this.”

The tear trough is one of the most technically demanding and highest-risk areas for dermal filler. Safe, effective treatment requires an in-depth understanding of oculofacial anatomy, vascular anatomy, and patient selection—not simply general experience with cosmetic injections.

If you already have under-eye filler – or have had it in the past – safe, precise removal is the first step before any further treatment. Our practice is one of the few in South Florida offering ultrasound-guided hyaluronidase dissolution, a significantly more precise and safer approach than blind injection.

Why Ultrasound Guidance Matters

Standard hyaluronidase injections are performed “blind” – the injector cannot see where the filler actually is, how deep it sits, or how much is present. This leads to incomplete dissolution, uneven results, and unnecessary enzyme exposure to surrounding tissue.

Ultrasound imaging shows the filler in real time. Our team uses high-resolution ultrasound to map exactly where product has migrated, how much has accumulated, and precisely where the dissolving enzyme needs to be placed – reducing the number of sessions required and dramatically improving outcomes.

Initial Evaluation

Ultrasound precisely maps the filler, identifying its depth, volume, and any migration. This allows treatment to be tailored to the individual’s anatomy rather than relying on estimation.

Targeted Dissolution

Ultrasound-guided hyaluronidase is delivered directly into the filler, allowing precise treatment while minimizing unnecessary exposure to surrounding tissues.

Clear Result

Post-treatment ultrasound confirms the outcome, ensuring the filler has been appropriately dissolved and allowing the natural contours of the under-eye to be restored before considering any further treatment.

Under-eye filler became popular because it addresses real, valid concerns: hollowness, shadow, volume loss, and the tired appearance that develops with age. These are legitimate aesthetic goals. The problem is not the goal – it’s the method.

Are you a Candidate for under-eye filler or surgical correction?

Not every patient with under-eye concerns is a surgical candidate, and not every patient needs surgery. The honest answer depends on your anatomy, your history, and your goals. 

You May Be a Strong Surgical Candidate If:

• You have visible fat herniation (bags) under your eyes
• You’ve had under-eye filler placed before with disappointing results
• You have recurring filler that keeps “coming back” despite dissolution
• Your under-eye area looks puffy, lumpy, or discolored after filler
• You are seeking a permanent solution rather than ongoing maintenance