Cosmetic injection of hyaluronic acid (HA) and other fillers is increasingly common, and the late complications of these relatively new procedures are now coming to medical attention. Three patients with delayed periocular swelling that began years after injection of HA are described, with CT, MRI, and histopathologic characterization. While HA fillers are marketed as having a temporary effect ...

Traditionally, medication is delivered to the eye by three main mechanisms: Topical ocular administration, systemic administration, and intraocular or periocular injection. Each of these methods has significant disadvantages. Topical ocular solutions or ointments have less than a 1% penetration, have rapid dilution and tear washout, and rely substantially on owner compliance to administer the m...

We report the first use of the Integra Bilayer Matrix Wound Dressing (Integra LifeSciences Corp), a collagen sheet with glycosaminoglycans and a silicone layer, in an innovative reconstruction approach to devastating traumatic tissue loss in the periocular area. A 36-year-old woman was involved in a motor vehicle crash with a resultant large defect from the medial canthus to the temporal fossa ...

In recent years, periocular recognition has become a popular alternative to face and iris recognition in less ideal acquisition scenarios. An interesting example of such scenarios is the usage of mobile devices for recognition purposes. With the growing popularity and easy access to such devices, the development of robust biometric recognition algorithms to work under such conditions finds stro...

The formation and invagination of the optic stalk coincides with the migration of cranial neural crest (CNC) cells, and a growing body of data reveals that the optic stalk and CNC cells communicate to lay the foundations for periocular and craniofacial development. Following migration, the interaction between the developing eye and surrounding periocular mesenchyme (POM) continues, leading to i...

We present a new system for biometric recognition using periocular images based on retinotopic sampling grids and Gabor analysis of the local power spectrum at different frequencies and orientations. A number of aspects are studied, including: 1) grid adaptation to dimensions of the target eye vs. grids of constant size, 2) comparison between circularand rectangular-shaped grids, 3) use of Gabo...

PURPOSE To report on a 19-year-old man with 'spontaneous' periocular hemorrhage and macrohematuria as the first signs of a bone-marrow-infiltrating rhabdomyosarcoma of the left superior rectus muscle. PROCEDURES Clinical eye examination, magnetic resonance imaging, laboratory workup and bone marrow biopsy were performed. RESULTS Magnetic resonance imaging showed a mass lesion in the left su...

BACKGROUND AND OBJECTIVE This study examines the value of ultrasound elastography for the examination of ocular and periocular structures. SUBJECTS AND METHODS Five patients, aged 22 to 75 years, who each had one blind eye were included. Patients underwent ultrasound elastography of their blind eye and periocular tissues using a 7-13 MHz probe. Strain grayscale and color-coded elastographic m...

Purpose: To review periocular dermoid cysts to determine distribution of demographic factors, and tumor location Methods: In this retrospective, observational case series in a tertiary-care hospital, we reviewed all cases of histopathologically verified periocular dermoid cysts at our institution between 2003 and 2011. The study endpoints included: age, gender, and tumor location. Results: Two ...

As a reliable personal identification method, iris recognition has been widely used for a large number of applications. Since a variety of iris devices produced by different vendors may be used for some large-scale applications, it is necessary to match heterogeneous iris images against the variations of sensors, illuminators, imaging distance and imaging conditions. This paper aims to improve ...