Introduction: Complication of an odontogenic infection to an orbital abscess is not a common presentation. The progression from a simple toothache to a condition that may lead to loss of vision is sudden and severe.   Case Report: We report a rare case in which a patient developed facial cellulitis that progressed to orbital abscess after unsterile dental manipulation by a medical fraudster (“q...

BACKGROUND Vision loss from glaucoma has traditionally been described as loss of "peripheral vision." In this prospective study, we aimed to improve our clinical understanding of the visual symptoms caused by glaucoma by asking patients specific detailed questions about how they see. METHODS Patients who were clinically diagnosed with various types and stages of glaucoma were included. All ha...

PURPOSE In this study we examined psychosocial adaptation to vision loss and its relationship to depressive symptomatology in legally blind older adults with age-related macular degeneration (ARMD). DESIGN AND METHODS The 144 study participants were outpatients of a large regional vision clinic that specializes in the diagnosis and treatment of ARMD in older adults. They were administered a b...

The renormalisation scheme of Kanatani is intended to iteratively minimise a cost function of certain form while avoiding systematic bias inherent in Sampson’s method of minimisation. This paper is concerned with enhancing our understanding of Kanatani’s complex scheme by expressing it within a novel framework common to several methods. This approach enables us to demonstrate that the renormali...

Vision loss typically affects either the wide peripheral vision (important for mobility), or central vision (important for seeing details). Traditional optical visual aids usually recover the lost visual function, but at a high cost for the remaining visual function. We have developed a novel concept of vision-multiplexing using augmented vision head-mounted display systems to address vision lo...

BACKGROUND The objective of this study was to evaluate risk factors associated with eyeball loss and ambulatory vision loss on emergent examination of patients with ocular trauma. METHODS We reviewed the medical records of 1,875 patients hospitalized in a single tertiary referral center between January 2003 and December 2007. Emergent examinations included a history of trauma, elapsed time be...

introduction: amblyopia is reduced vision in an eye that has not received adequate use during early childhood.  the most common cause of unilateral visual loss in children is amblyopia with prevalence rate of 1-4 percent in pre-school children . however, effective treatments may prevent intensive complication. this study was done to assess the treatment effects of amplyopia patients who have re...

Segmentation of range images has long been considered an important and difficult problem and continues to attract the attention of researchers in computer vision. In this paper we consider the problem of segmenting range images into planar regions. The approach we present combines different strategies for grouping image elements to estimate the parameters of the planes that best represent the r...