Morning blues: Morning sickness is not just experienced by pregnant women, but can be caused by a number of factors in all people Sleeping itself can also be the cause of morning sickness. People who suffer from sleep apnoea, a condition that can cause you to stop breathing during the night, can wake in the morning feeling unrested and nauseous.
The History of Safety Glasses. Safety glasses should be worn by personnel in manufacturing, construction, medical, some service industries and sometimes sports. Although eye injury is a higher risk for these individuals, many people do not wear eye protection for one reason or another.
Eyeglasses History. The first vision aid, called a reading stone, was invented around 1000 AD. The reading stone was a glass sphere that was laid on top of the reading material to magnify the letters. The first wearable eye glasses were invented around 1284 in Italy. It is thought that Salvino D'Armate was their inventor.