Tear Trough Filler: What Can Go Wrong and How to Do It Right

Why the Tear Trough Is Uniquely Challenging

The tear trough is the concave groove running diagonally from the inner corner of the eye toward the cheek. The skin overlying it is the thinnest on the face — typically 0.5mm or less. There is a rich vascular supply in the periorbital region. These factors mean that errors in depth, product choice, or quantity have visible and sometimes serious consequences in this area.

The Tyndall Effect and Superficial Placement

The most common complication is the Tyndall effect — a bluish discolouration that appears when HA filler is placed too superficially. Correct technique requires deep sub-orbicularis placement — the filler must be deposited beneath the muscle, not above it. This is technically demanding and requires thorough understanding of periorbital anatomy.

Product Selection Matters

The area requires a very soft, low-viscosity product with high spreadability and low G-prime. High-viscosity fillers designed for structural support elsewhere have no place in the tear trough — their use is one of the most common causes of lumping, migration, and the puffed under-eye appearance that is extremely difficult to correct.

When Filler Is Not the Answer

Not every tear trough concern is best addressed with filler. Patients with significant lower eyelid laxity or prominent malar festoons may find that filler makes the appearance worse.

At consultation, Dr. Sin Yong assesses the anatomy carefully and will tell you directly if filler is not appropriate for your specific concern.

Vascular Risk in the Periorbital Region: Why Technique Is Critical

The periorbital region contains the supratrochlear and supraorbital arteries superiorly, and the infraorbital artery running just below the orbital rim. These vessels supply blood to critical structures including the eye. Intravascular injection of filler in the periorbital area — even inadvertently — carries the risk of vascular occlusion, which in the worst cases can lead to vision loss.

This risk is not eliminated by experience — it is managed by technique. The use of a blunt-tip cannula rather than a sharp needle for periorbital filler placement significantly reduces the risk of intravascular injection. Aspiration before injection, slow injection rates, and precise knowledge of the relevant vascular anatomy are all elements of safe periorbital technique. These are non-negotiables at IN Eternity, not optional precautions.

Managing Existing Tear Trough Filler: What Patients Should Know

A significant proportion of patients who present for tear trough assessment at IN Eternity have had previous filler placed elsewhere that has migrated, produced the Tyndall effect, or created a puffed appearance. The management of existing periorbital filler requires a different approach to de novo treatment.

Hyaluronidase is the appropriate intervention for dissolving misplaced or excessive periorbital filler. However, the periorbital region requires careful assessment before hyaluronidase administration — the enzyme is non-specific and will dissolve both the injected product and any naturally occurring hyaluronic acid in the surrounding tissue. A staged approach, dissolving incrementally over multiple sessions rather than aggressively in a single session, typically produces the best outcome.

After dissolution and a sufficient settling period — typically 4–6 weeks — Dr. Sin Yong can then reassess whether replacement with a correctly placed product is appropriate, or whether a non-filler approach to tear trough improvement would produce a better result.

In the tear trough, the consequences of poor technique are visible immediately — and in the worst cases, irreversible. The standard of care here must be higher than anywhere else on the face.