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
The macula is the area of the retina with the highest concentration of cones (responsible for colour vision) and which provides the most detailed and clear vision possible. In a healthy eye, the rays must focus on this area to produce an optimum image in terms of quality, precision and detail.