The face region immediately surrounding one, or both, eyes is called the periocular region. This paper presents an iris segmentation algorithm for challenging periocular images based on a novel iterative ray detection segmentation scheme. Our goal is to convey some of the difficulties in extracting the iris structure in images of the eye characterized by variations in illumination, eye-lid and ...

A 12-year-old domestic short-haired cat was referred for evaluation of periocular masses. The tail had similar masses and was amputated previously by the referring veterinarian. On examination, multiple pigmented nodules, 3-15 mm in diameter, were found in the periocular skin, primarily involving the palpebral eyelid margin. A wedge excisional biopsy revealed small cuboidal cells forming multip...

A case of periocular dirofilariasis has been diagnosed in Iran. A 27-yr old female referred with a history of edema and redness in the left eye since 2 wk ago. On slit lamp examination, a moving thread-like worm was seen in the subconjunctival area. Two days later, a 126 mm long, live filaria worm was extracted from the lower lid subcutaneous tissue. The worm was diagnosed as, likelihood, Dirof...

We herein present the first reported case of severe proptosis caused by ocular and periocular hemorrhages in a continuous ambulatory peritoneal dilaysis patient without previous history of trauma. The bleeding tendency caused by uremia and the use of warfarin during uncontrolled high blood pressure were most likely responsible for her ocular and periocular hemorrhages. Appropriate control of bl...

introduction cement has a wide industrial usage and it is the leading cause of occupational skin diseases among construction workers, which are present as contact urticarial and contact dermatitis. case presentation a 79-year-old water sewage worker man referred to our department with numerous symmetric hyper-keratotic papules with an erythematous base on both hands and feet for about 20 years....

BACKGROUND Iridoschisis is a rare disorder characterized by splitting of the anterior and posterior iris stroma, resulting in disintegrated iris fibrils which float freely in the anterior chamber. We report an exceptional case of bilateral iridoschisis occurring in conjunction with keratoconus and severe allergic eye disease. CASE PRESENTATION A 24-year-old white man had had periocular contac...

background: atopic dermatitis is a major public health problem, often starting in early childhood and sometimes followed by other allergic diseases. although hypersensitivity to foods is assumed to play an essential role in the development of atopic dermatitis in some patients, little is known about common food allergens in iranian children with atopic dermatitis. objectives: this study was des...

Purpose: To evaluate the results of combined chemotherapy and periocular carboplatin injection to control advanced intraocular retinoblastoma (Rb). Methods: In this prospective interventional case-series, we included 8 eyes of 8 patients with advanced intraocular Rb (group C or D in International Intraocular Retinoblastoma Classification, IIRC). In these patients, periocular carboplatin was inj...

The classically conditioned eyeblink response in the rabbit is one of the best-characterized behavioral models of associative learning. It is cerebellum dependent, with many studies indicating that the hemispheral part of Larsell's cerebellar cortical lobule VI (HVI) is critical for the acquisition and performance of learned responses. However, there remain uncertainties about the distribution ...

PURPOSE To investigate the effects of topical nipradilol on blood velocity in the optic nerve head (ONH) in normal humans and the ocular and periocular distribution of topically instilled nipradilol in monkeys. METHODS In normal humans, 0.25% nipradilol was instilled in one eye and vehicle in the other twice daily for 7 days, and blood velocity in the ONH was measured by the laser speckle met...