Spectacles, also known as eyeglasses, are a type of optical device that is used to improve vision. They consist of a pair of lenses mounted in a frame that sits on the bridge of the nose and ears. The lenses can be made of glass or plastic, and are designed to correct a variety of vision problems such as nearsightedness, farsightedness, astigmatism, and presbyopia. The frames can be made from a range of materials, including plastic, metal, and wood, and come in a variety of shapes and sizes to fit different face shapes and styles. Spectacles are commonly used by people of all ages and can be prescribed by an optometrist or ophthalmologist.

What are "spectacles"?

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