Glaucoma is a common eye condition where the optic nerve becomes damaged. It usually occurs as a result of fluid building up in the front part of the eye, which increases pressure inside the eye. If the condition is left untreated or not treated early enough it can lead to loss of vision.
Manchester United manager Jose Mourinho suffered the heaviest home defeat of his coaching career as Tottenham Hotspur won 3-0 at Old Trafford on Monday to deepen an early-season crisis for the Red Devils.
The remarkable strength of ionic crystals is easily explained at the atomic scale: Positively and negatively charged atoms sit side by side in a periodic arrangement that repeats countless times. The strong electrostatic force in between keeps them together.