In 1286, Italy invented bifocals to correct vision..

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In 1286, Italy invented bifocals to correct vision | #discount prescription glasses

In 1286, Italy invented bifocals to correct vision

At present, there are many kinds of discount prescription glasses, such as goggles, swimming goggles, sunglasses, fashion mirrors, etc., this article discusses the glasses that correct vision, and does not involve other types of glasses.

In 1286, Italy invented bifocals to correct vision