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 retina is the tissue layer located in the back of your eye. This layer transforms light into nerve signals that are then sent to the brain for interpretation. When your blood pressure is too high, the retinaâs blood vessel walls may thicken. This may cause your blood vessels to become narrow, which then restricts blood from reaching the retina.