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Eyewear consists of items and accessories worn on or over the eyes, for fashion or adornment, protection against the environment, and to improve or enhance visual acuity. Common forms of eyewear include glasses (also called eyeglasses or spectacles), sunglasses, and contact lenses. Eyewear can also include more utilitarian forms of eye protection, such as goggles. Conversely, blindfolds are a form of eyewear used to block vision for a variety of purposes. ==The history of eyeglasses in fashion== The crudest form of lens was first used in ancient times (c1000) when it was noted that images were magnified if viewed through convex-shaped glass. Franciscan monk, Roger Bacon (1220-1292), experimented with the principal and confirmed that objects could be more easily seen when viewed through a sphere of glass, with the potential for helping weak or ageing eyes. During the 15th century in Florence, Italy, experiments were being conducted on convex lenses – as well as concave lenses – for the first time. With the knowledge that eyesight declined after the age of 30, spectacle makers were constructing progressive lenses in different strengths, forerunners to today's prescription lenses. In the 1930s, ‘spectacles’ were described as “medical appliances.” 〔DETAILS OF REF〕 Wearing spectacles was sometimes considered socially humiliating. In the 1970s, fashionable glasses started to become available through manufacturers, and the government also recognized the demand for stylized eyewear.〔 The first ever pair of eye glasses can be traced back to approximately the late 13th century! As we all know and can see, frames and lenses have evolved and developed significantly since then! 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Eyewear」の詳細全文を読む スポンサード リンク
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