To reduce the influence of the eyelid for the iris recognition rate, an eyelid detection algorithm for the iris recognition is proposed. The grayscale morphological operations are employed to remove the interference of the eyelash and the light spot to the eyelid region. The points of the minimum grayscale value of each column in the eyelid region are extracted as edge points. The least squares...

PURPOSE Although several reports of supernumerary orbital muscles related to the levator palpebrae superioris have been published, no case has been associated with congenital eyelid retraction. This report describes an apparent causal relationship between an accessory levator muscle slip and congenital eyelid retraction. METHODS Case report and literature review. RESULTS Release of the anom...

The primary function of the lacrimal system is to produce and drain the tear film from the surface of the eye. The tear film is composed of three integrated layers: the aqueous, mucus, and lipid layers. The aqueous layer is produced by the orbital lacrimal gland and gland of the third eyelid and secreted onto the ocular surface through ductules that traverse the conjunctiva. The mucus layer is ...

PURPOSE To compare morphometric data of eyelid fissure using computerized image analysis before and after application of botulinum toxin type A in patients with eyelid retraction caused by dysthyroid orbitopathy in acute stage. METHODS This was a prospective study with 12 individuals that received transcutaneous 5 UI/0.1 ml injection of botulinum toxin in the upper eyelid. They were examined ...

PURPOSE To report the outcomes of acquired lower eyelid epiblepharon after various surgeries in thyroid associated ophthalmopathy (TAO) patients. METHODS A retrospective review of the medical records of 53 TAO patients with acquired lower eyelid epiblepharon between October 1999 and June 2011 was performed. Data were collected on demographics, type of lower eyelid epiblepharon, the detailed s...

PURPOSE To establish the relationship between upper eyelid saccades and upper eyelid pursuit movements. METHODS Upper eyelid saccades and periodic sinusoidal upper eyelid pursuit movements were recorded in a sample of controls and patients with Graves upper eyelid retraction. A video-computerized system was used to register both types of movements that accompanied 60 degrees of eye rotation a...

PURPOSE The aim of this study was to clarify the differences between single and double eyelid structures quantitatively using an ultrasound biomicroscopy. DESIGN A single-center observational study. METHODS Upper eyelids of Asian volunteers were evaluated with a 50-MHz ultrasound biomicroscopy. The skin-orbicularis oculi complex (SOOC), levator aponeurosis, Mueller muscle-conjunctival compl...

Historically, lower eyelid blepharoplasty has been a challenging surgery fraught with many potential complications, ranging from ocular irritation to full-blown lower eyelid malposition and a poor cosmetic outcome. The prevention of these complications requires a detailed knowledge of lower eyelid anatomy and a focused examination of the factors that may predispose to poor outcome. A thorough p...

PURPOSE To investigate the causes of lower eyelid retraction and evaluate the outcomes of various surgical procedures. METHODS We conducted a retrospective medical record review of patients who underwent lower eyelid retraction surgery performed by a single surgeon at Kim's Eye Hospital between 2006 and 2013. We investigated the causes of lower eyelid retraction, clinical history, characteris...