“Thus examined, the departure of the eye from achromatism appears very gross indeed.”

“Leonhard Euler in 1747 had suggested that achromatism might be obtained by the combination of glass and water lenses.”

“He had maintained an interest in science and in Europe met the Italian astronomer Giovanni Amici, who was working on achromatism in microscopes.”

“The long focus achromat is certainly not portable but it does give superb images at a reasonable cost.”

“A photograph of a Pingelapese child playing with fire, painted over with watercolors by an achromat.”

“Many options are possible: lighting, optional achromat and eye, can adapt a camera.”

“Lower is the value of 'a' and 'b', higher is the achromaticity and lower is the purity.”

“Achromaticity of the inner cladding coupling is ensured by the coupling statistics of a high number of modes.”

“Achromaticity would heighten similarities and flatten differences.”

“By Max Campbell July 11, 2017Jaynard, a young boy affected by achromatopsia, or total color blindness.”

“The genetic cause has been determined for several color vision defects, achromatopsia, blue monochromatism, protanopia, deuteranopia, and enhanced S-cone syndrome.”

“In rare instances when V4 is damaged, the affected individual develops central achromatopsia, the inability to see or even imagine colours despite a normal trichromatic retina.”