Color blindness deficiency is the inability or decreased ability to see the color, under normal lighting conditions. There is no actual blindness but there is a deficiency of color vision. Color blindness is of many types like Red-Green, Blue-Yellow etc.., In this paper we proposed a new method that the users used the histogram thresholding to create a green colour mask which when they applied ...

A coincidence of Muller cell sheen dystrophy (MCSD) and congenital color vision deficiency in a 36 years old man is presented in this case report. Best corrected visual acuity (BCVA) was 1.0 in both eyes. He failed to read Ishihara color plates (0/13 in both eyes). Dilated fundus examination showed bilateral wrinkled glistening inner retinal surface at the posterior pole. In the macular images ...

Purpose: Various professions require employees to be able detect different shades of color accurately when visually reading test results with colorimetric end points. To prepare health science students better meet this requirement, a screening for vision deficiency (CVD) was administered any major or minor errors as part the undergraduate student experience. Method: Screening using Farnsworth D...

Abstract People with color vision deficiency (CVD) have a reduced capability to discriminate different colors. This impairment can cause inconveniences in the individuals’ daily lives and may even expose them dangerous situations, such as failing read traffic signals. CVD affects approximately 200 million people worldwide. In order compensate for CVD, significant number of image recoloring stud...

Color vision deficiency (CVD) is a common ocular disorder that hampers patients’ color distinction capabilities, causing difficulties in their daily life routine. Till date, CVD cure not developed, and treatment courses, such as gene therapy, are yet to be applied on humans. Hence, patients opt for wearable visual aids tinted glasses/contact lenses, which achieve the latter by filtering out pro...

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...

Both acquired color vision deficiencies and abnormal pattern electroretinograms (PERGs) are observed in patients with ocular hypertension (OHT) as well as in patients with glaucoma. In the present study we determined the prevalence of both of these functional deficits in a large group of OHT patients (N = 130). Color vision was tested with the desaturated D-15 and a color confusion score was us...