The American man of science, Benjamin Franklin, who endured both nearsightedness as well as presbyopia, devised bifocals in 1784 to obviate having to frequently alternate between 2 pairs of glasses.
Who knew that several centuries later Franklin’s invention would lead to the ideal glasses for computers with the development of the occupational bifocal lenses.
The 1st [...]

How many parents have enjoyed watching their children intently painting or sculpting clay to create curious treasures for mum and dad? In fact, many of these children do in school, and they go home. One thing that all of these children have in common is the fact that most of them will be wearing a [...]