Silmälasi

Silmälasi is the Finnish word for eyeglasses or spectacles. These are vision-correcting lenses worn in front of the eyes, typically for the purpose of improving sight. They are commonly used to correct refractive errors such as myopia (nearsightedness), hyperopia (farsightedness), astigmatism, and presbyopia. The lenses are usually held in place by a frame that rests on the nose and over the ears.

The development of eyeglasses dates back to the late 13th century in Italy, although the exact inventor remains unknown. Early eyeglasses used convex lenses to correct presbyopia. Over centuries, lens technology and frame designs have evolved significantly, leading to more comfortable, effective, and stylish options. Modern silmälasi can be made from a variety of materials, including glass, plastic, and polycarbonate, each offering different benefits in terms of durability, weight, and optical quality.

Beyond vision correction, silmälasi also serve other purposes. They can be used as sunglasses to protect the eyes from harmful ultraviolet (UV) radiation and reduce glare. Specialized types of eyeglasses, such as safety glasses, protect the eyes from physical hazards in work or recreational settings. Furthermore, eyeglasses have become a fashion accessory, with a wide range of frame styles and colors available to complement personal appearance. Prescription eyewear can be obtained after an eye examination by an optometrist or ophthalmologist.