PURPOSE Difficulty identifying faces is a common complaint of people with central vision loss. Dakin and Watt (2009) reported that the horizontal components of face images are most informative for face identification in normal vision. In this study, we examined whether people with central vision loss similarly rely primarily on the horizontal components of face images for face identification. ...

OBJECTIVE To explore the experience of vision loss, focusing on working age patients' self-awareness of impairment and self-identification with the impairment. DESIGN A cross-sectional and qualitative study, using semi-structured interviews. SETTING A specialized rehabilitation centre and a low vision unit at a public hospital. PARTICIPANTS A convenience sample of 38 patients between the ...

BACKGROUND Acute vision loss in the post-partum period can occur due to many reasons. Eclampsia, posterior reversible encephalopathy syndrome (PRES), pituitary apoplexy, and central serous retinopathy are some of the important causes. Cryptococcal meningitis as a cause of acute vision loss in the post-partum period has not been mentioned in literature. CASE PRESENTATION A 25-year-old female p...

BACKGROUND Healed cytomegalovirus (CMV) retinitis in the setting of highly active antiretroviral therapy (HAART) is complicated by inflammatory sequelae and vision loss. AIM To determine the long term visual outcome of AIDS patients with CMV retinitis who received HAART. METHODS 90 eyes of 63 consecutive AIDS patients with extramacular CMV retinitis were studied prospectively. RESULTS Imm...

Five patients with unilateral orbital tumours are described in whom transient loss of vision occurred on deviation of the affected eye from the primary position. Other presenting features were diplopia, proptosis, poor visual acuity, visual field defects, pupillary abnormalities, fundal changes and altered colour vision. Abnormalities on fluorescein angiography suggest that the visual loss is d...

We have proposed a novel concept of vision multiplexing for the visually impaired - superimposing contour images over their natural view of a scene or over original images presented on a TV screen. We have implemented the concept using an optical see-through head mounted display to provide either visual field expansion to patients with peripheral field loss or vision enhancement to patients wit...

Retinitis pigmentosa is characterized by loss of night vision, followed by complete blindness. Over 40 genetic loci for retinitis pigmentosa have been identified in humans, primarily affecting photoreceptor structure and function. The availability of excellent animal models allows for a mechanistic characterization of the disease. Metabolic dysregulation and oxidative stress have been found to ...