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Information × Registration Number 2114U002294, Article popup.category Thesis Title popup.author popup.publication 01-01-2014 popup.source_user Сумський державний університет popup.source http://essuir.sumdu.edu.ua/handle/123456789/45609 popup.publisher Sumy State University Description Contact lenses is a great invention which is intended for people with a sight problem. They have changed the lives of millions of people around the world. It was estimated that 125 million people (2%) used contact lenses in 2004. A contact lens is a thin lens placed directly on the surface of the eye and it is considered a medical device and may be worn to correct vision or for cosmetic or therapeutic reasons. They might seem like a new, modern invention, but the idea has actually been around for hundreds of years. So, the history of contact lenses development is long and rich. popup.nrat_date 2025-05-12 Close