The latest study, released by the plaintiffs in a class-action lawsuit against Fitbit, found that the pulse-monitoring technology used in the company's wrist-bound Surge and Charge devices was highly inaccurate during elevated physical activity..
An eye disease affecting the macula (the center of the light-sensitive retina at the back of the eye), causing loss of central vision. Migraine with Aura: A type of severe headache accompanied by various visual symptoms. Myopia: See nearsightedness: Nearsightedness
foveacentralis(fovea)- a tiny area in the center of the retina atwhich vision is at its best-contains only cones (cone = color)- vital to many visual tasks 53. frequency number of full wavelengths that pass througha point in a given time interval 36.