BACKGROUND Color blindness is a common X-linked genetic disorder. However, most of color blinds remain undetected due to absence of proper screening. Our study was to determine the prevalence of red-green color vision defects among Manipuri Muslim males and females. The study could help in decreasing birth of children with this disorder as Muslims commonly perform consanguineous marriage among ...

Individuals with Color Vision Deficiency (CVD) are often unable to distinguish between colors that individuals without CVD can distinguish. Recoloring tools exist that modify the colors in an image so they are more easily distinguishable for those with CVD. These tools use models of color differentiation that rely on many assumptions about the environment and user. However, these assumptions ra...

There are individual differences in color vision. It is difficult for people with defective cones in the retina to recognize the difference of specific colors. We propose a system using a camera and a projecctor to present color information for color vision deficiency. When there are indistinguishable colors in real objects, the system converts the color to a distinguishable color for projectio...

We propose a method for the matching of characteristics of stereo images based on the concepts of an initial global match and the foveation of the images. We present several macular tilings that can be used in the foveation process. Given a pair of cameras that image a static scene, vergence is achieved at a minimun of the mse difference between the two corresponding macular images.

Vision begins at the retina, a light-sensitive tissue at the back of the eye that comprises highly organized, laminated networks of nerve cells. Investigating the mechanisms of retinal development is fundamentally important to gaining a basic knowledge of how vision is established. In this book, we present the sequence of developmental events and the mechanisms involved in shaping the structure...

Early visual changes caused by diabetes include color vision losses and an abnormal full-field electroretinogram. The purpose of this study was to evaluate color vision in type 2 diabetic patients with no clinically detectable retinopathy using an objective psychophysical color vision test, evaluate retinal function assessed by full-field electroretinography (ffERG), and verify the agreement am...

The colours we see reflect not only the light wavelengths presently being detected, but also those already received. To understand colour constancy therefore requires an understanding of adaptation in the visual system.

The current experiment was carried out to extend our knowledge about the relative importance of stereoscopic display and hand-image collocation for dextrous interaction. We devised a new task, the Volumetric Dexterity Test (VDT), which quite accurately duplicates the way professional personnel such as surgeons and radiologists interact with detailed medical data in a VR environment. Our results...

Fifty years have passed since the seminal contribution of Guy Orcutt [Orcutt, 1957], which gave birth to the field of Microsimulation. We survey, from a methodological perspective, the literature that followed, highlighting its relevance, its pros and cons vis-à-vis other methodologies and pointing out the main open issues.

The prevailing view of Nagaoka's "Saturnian" atom is so misleading that today many people have an erroneous picture of Nagaoka's vision. They believe it to be a system involving a 'giant core' with electrons circulating just outside. Actually, though, in view of the Coulomb potential related to the atomic nucleus, Nagaoka's model is exactly the same as Rutherford's. This is true of the Bohr ato...