ABSTRACT
Crow’s feet are produced by the vertically oriented fibres of the orbicularis oculi and by the elevators and retractors of the corner of the mouth, zygomaticus and risorius. Treatment of the area is aimed at weakening only the lateral part of orbicularis oculi. Coincidental injection of the lateral orbital area has a synergistic effect with infraorbital injections. Injection of hypertrophic orbicularis is a very exciting aesthetic treatment because it demonstrates the artistry of botulinum toxin injections. Combining these injections with crow’s feet injections is a particularly popular treatment option in individuals who tend to have more almond-shaped eyes or narrower palpebral apertures; it is especially popular and effective in younger females and individuals of Asian ethnic origin. Smiling transiently diminishes the perceived size of the palpebral aperture.
