Tired eyes and blurred vision. If you spend a long time using a computer or watching television, your eyes can become tired and your vision blurred. Using a computer does not cause permanent damage to your eyes. However, working on a computer is a demanding visual task that can cause eye discomfort.
Fruits that are heavily alkaline include watermelon, cantaloupe, mangoes, pears, grapes and passion fruit. Dried fruits like dates, apricots, figs and raisins are also considered heavy alkaline foods. Apples, fresh apricots, bananas, berries and avocados all have a moderately alkaline pH of around 8.0.
On the pH scale, a score of 7 is considered neutral. Anything measuring 6.9 or below is considered an acid, and anything rating 7.1 and above is considered an alkali. While water has a pH of 7, lemons are acidic, measuring at 2 to 3. The popular belief that lemons become alkaline during digestion isn't upheld by science. Under no circumstances can an acidic food alkalize your blood, said Kat Day, a chemist and science blogger in Oxfordshire, England.