ulleres

Ulleres, also known as glasses, are optical devices designed to assist individuals with vision impairments or to enhance vision for those with normal or corrected-to-normal vision. They consist of lenses mounted in a frame, which can be made of various materials such as plastic, metal, or a combination of both. The lenses are typically made of glass or plastic and can be prescription lenses, which correct refractive errors such as nearsightedness, farsightedness, and astigmatism.

Ulleres serve multiple purposes beyond vision correction. They can protect the eyes from harmful UV rays, reduce glare, and improve visual comfort. They are also used for fashion and aesthetic purposes, with a wide range of styles and designs available to suit different preferences and occasions.

The history of ulleres dates back to ancient times, with early examples found in Egypt and China. However, the modern form of glasses as we know them today was invented in the 13th century by Italian monk Salvino D'Armate. The first commercially available glasses were produced in Venice in the 16th century, and they have since become an integral part of everyday life for many people worldwide.