Infraorbital Rim
The infraorbital rim is the bony lower edge of the eye socket — its forward projection determines under-eye support and tear trough depth.
Definition
The infraorbital rim is the lower border of the orbital cavity (eye socket), formed by the maxilla and the zygomatic bone. Its forward (anterior) projection determines how much skeletal support sits behind the lower eyelid. A well-projected rim provides a flat, even transition from lower lid to cheek. A recessed rim leaves the lower lid unsupported, producing a dark hollow known as the tear trough or nasojugal groove. Infraorbital rim projection is heavily genetic — a "negative orbital vector" describes a face where the cornea sits forward of the rim, predisposing to tear troughs and lower-eyelid issues. Aesthetic medicine targets the rim directly through tear trough filler, fat repositioning, and rim implants.
Why it matters
Infraorbital rim projection is one of the strongest determinants of how rested or tired the eyes appear. Strong rim support eliminates dark circles caused by structural shadow (independent of pigmentation or fatigue). It also enhances "hunter eyes" by tucking the lower lid against bone instead of letting it hang. Looksmaxxing communities prize forward rim projection as one of the harder-to-fake markers of good facial bone development.
How AI measures it
AI estimates infraorbital projection from three-quarter or profile photos by mapping the lower orbital landmarks and comparing their position to the cornea projection (orbital vector). Front-facing photos provide a proxy via tear trough depth — pronounced shadows under the eye correlate with rim recession.
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Frequently asked questions
What is a negative orbital vector?
A negative orbital vector means the cornea (front of the eye) sits forward of the lower orbital rim. This predisposes to tear troughs, lower-lid laxity, and a tired-eye appearance.
Can you fix recessed infraorbital rims without surgery?
Tear trough filler (hyaluronic acid placed deep on the bone) is the standard non-surgical approach and lasts 12-18 months. Permanent options include fat grafting and silicone or porous polyethylene rim implants.
Does mewing affect the infraorbital rim?
Claims exist that proper tongue posture supports forward midface growth in young people. Evidence in adults is essentially absent — the rim is part of the maxilla and largely fixed after puberty.