A genealogical link was established six generations back between a family living in England and Australia, and one of the families reported originally by Sorsby et al (1949) as suffering from autosomal dominant inflammatory macular dystrophy (fundus dystrophy). The onset--in the fifth decade of life--and the progress of the condition, which usually ends in blindness, has been observed in a numb...

suggests, as do our data, that responses to 1-x-OHD, and I-ax, 25-(OH)2D, are different enough to have important implications in treatment. Although hypercalcaemia remains a serious risk with all vitamin D derivatives the rapid reversal that is possible after I-x, 25-(OH),D, treatment makes this agent preferable to calciferol and possibly to 1-x-OHD,. This is particularly so in patients in whom...

Patients with the complete form of congenital stationary night blindness (CSNB) often have reduced visual acuity, myopia, impaired night vision, and sometimes nystagmus and strabismus, however, they seldom complain of color vision abnormality. A 17-year-old male who was at technical school showed abnormalities in the color perception test for employment, and was referred to our hospital for a d...

OBJECTIVE To investigate the prevalence of red-green color vision deficiency (CVD) among medical and dental students compared with non-medical students. METHODS This descriptive, cross-sectional study compared the prevalence of CVD between medical and non-medical Pakistani students. A total of 926 medical and dental students from Baqai Medical University, Karachi, Pakistan were compared with ...

PURPOSE To evaluate refractive errors in school age children with color vision deficiency (CVD) and those with normal color vision (NCV) in order to make a better understanding of the emmetropization process. METHODS A total of 4,400 primary school students aged 7-12 years were screened for color vision using Ishihara pseudoisochromatic color vision plate sets. Of these, 160 (3.6%) students h...

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...

AIM: To investigate the prevalence of color vision deficiency (CVD) among college students and their quality life (QoL) in a Chinese college. METHODS: This cross-sectional study was performed Sichuan University Chengdu, China. The questionnaire containing participants' demographic data, as well CVD related QoL distributed to who were screened [by Color Vision Examination Plates (Version 6)] 202...