Three middle-aged male patients are described with a peculiar patterned dystrophy of the macula. The basic lesions are discrete yellow plaques typically confined to the macular area and radiating from the fovea. They appear to be located at the level of the retinal pigment epithelium (RPE). With the passage of time some of the yellow plaques altered in extent and configuration, and atrophic cha...

1927-60: reports of 10 cases 1964: Samman and White describe the condition and coin the term 'yellow nails'.' This is the first description of a new syndrome of slow-growing nails with a characteristic appearance and oedema, usually affecting the ankles 1966: the syndrome is defined as the presence of a triad of yellow nails, lymphoedema and pleural effusion2 1972: the presence of two of the th...

Yellow nail syndrome was defined in 1964 as a combination of slow growing, discoloured nails and edema (Samman & White, 1964). The rate of growth of finger nails was less than 0.2 mm per week compared with the normal 0.5-1.2 mm per week. The nails were thickened and the cuticles were deficient. The color varied from pale yellow to slightly greenish. Onycholysis (separation of the nail from its ...

We believe that the Gordian knot may be cut by discarding the traditional definition of white, and assuming that red and green, when mixed alone, tend to cancel each other's chroma without the intervention of any blue process whatever. This leaves but little chroma for the blue to cancel when mixed with yellow. Consequently, no intrinsic blue process need be assumed to accompany yellow, and the...

White Light-Emitting Carbon Dots In article number 2000161, Bin Liu, Xing-Hong Zhang, and co-workers prepare a white-light-emitting carbonized polymer dot by solvothermal method. A multi-cluster-induced luminescence mechanism is proposed to account for the observed luminescence. Loose clusters formed from hydroxyurethane C=N bonds emit blue light, whereas compact generated through interactions ...

Hypomineralized enamel defects frequently are manifest as a mottled-white appearance and can be associated with variable degrees of discrete yellow-brown intrinsic staining. Numerous treatment approaches have been proposed, ranging from bleaching to enamel reduction to restorative techniques. Bleaching of hypomineralized enamel lesions, using 1 to 2 applications (10 to 15 minutes each) of 5% so...

Several publications in recent years have given conflicting reports upon the inheritance of shank color. Yellow shank color has been reported to be inherited in a simple Mendelian fashion, the sex-linked gene for yellow shank color ( U ) being dominant to its allele (y) , the gene for blue shank color. In contrast to this, the gene for yellow shank color has been reported to be autosomal, the r...