The eyes are the most captivating feature of the face. Many of the early signs of aging occur in the periocular region. This article focuses on surgical rejuvenation of the upper eyelid with an emphasis on the eyelid anatomy, aging of the eyes, clinical evaluation, surgical technique, and postoperative complications. The paradigm has shifted to a more conservative resection of skin, muscle, and...

P eriorbital rejuvenation is a topic of particular interest to aesthetic surgeons, as aging changes often occur first around the eyelids, and periorbital surgery can improve both function and cosmesis. Ahead, the authors describe an approach to the periorbital aesthetic unit to treat the eyebrow, upper eyelid, lateral canthus, lower eyelid, and midface through a single upper eyelid blepharoplas...

Notch signaling is pivotal for the morphogenesis and homeostasis of many tissues. We found that aberrant Notch activation in mouse neural-crest-derived periocular mesenchymal cells (POMCs), which contribute to the formation of corneal and eyelid stroma, results in blepharophimosis. Compound transgenic mice overexpressing the Notch1 intracellular domain (N1-ICD) in POMCs (POMC(N1-ICD)) showed re...

Facial nerve palsy, whether the cause is idiopathic, or following such insults as surgery, trauma, or malignancy, places the health of the ocular surface at risk. Reduced or absent orbicularis oculi function results in lagophthalmos and exposure of the cornea, which is exacerbated by eyelid malposition. Management of the exposure keratopathy is paramount to prevent corneal breakdown, scarring, ...

23 24 Based on kinematic properties and distinct substrates, there are different classes of 25 eyelid movement described as eyeblinks. We investigate whether the eyelid movements 26 made in response to a conditioned stimulus (CS) are a category of eyelid movements 27 distinct from blinks. Human subjects received 60 trials of classical eyelid conditioning 28 with a tone as the CS and electrical ...

PURPOSE To examine inferior displacement of the lower eyelid during eye closing in intraoperative quantification of blepharoptosis surgery. METHODS A series of lower eyelid movements during eye closing in intraoperative quantification of blepharoptosis surgery were examined in 30 eyelids of 15 patients (6 males and 9 females; mean age 70.0 years; range 43-81 years) with bilateral aponeurotic ...

To survive, animals must learn to control their movements with millisecond-level precision, and adjust the kinematics if conditions, or task requirements, change. Here, we examine adaptive timing of motor output in mice, using a simple eyelid conditioning task. Mice were trained to blink in response to a light stimulus that was always followed by a corneal air-puff at a constant time interval. ...

This report is the first characterization of the histology and ultrastructure of the barred owl conjunctiva. The inferior eyelid was dominated by a large disk-shaped plate covered by a non-keratinized stratified squamous or cuboidal epithelium of variable thickness. The apical surface of the plate epithelium varied from flat to long microvilli or even short cytoplasmic extensions similar to tho...

BACKGROUND Hyaluronidase (Hylase Dessau(®)) is a hyaluronic acid-metabolizing enzyme, which has been shown to loosen the extracellular matrix, thereby improving the diffusion of local anesthetics. Lower eyelid edema is a common post-interventional complication of cosmetic procedures performed in the lid region, such as the injection of hyaluronic acid fillers for tear-trough augmentation. The p...

BACKGROUND Laxity and rhytidosis of eyelid skin as a result of photoaging is a frequent cosmetic concern. Fine lines and deep wrinkles may not be optimally addressed with traditional ablative carbon dioxide (CO(2)) resurfacing. Modern devices allow for surface fractional ablation and deep fractional ablation with narrow treatment columns that target deep dermal layers. OBJECTIVES To examine t...