Whether you wear them for reading, or have to wear them full time, glasses are an invention many of us can’t do without. VSP Blog has created an interesting infographic detailing the history behind the lenses in your classes, along with a clear look into the future.

Have you ever wonder for the technology behind the lenses in your glasses? This infographic shows the recent advancement of lenses. What is more, the infographic shows the materials, innovations and technology used to create lenses over the years. During the Middle Ages polished reading stones were used to magnify text.

Later on, in 19th-century bifocals were invented. Furthermore, in 1930s plastic lenses became available.


Source: http://vspblog.com/evolution/

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