Okulaaride

Okulaaride, also known as eyeglasses or spectacles, are optical devices designed to correct vision problems. They consist of lenses mounted in a frame, which is worn on the face. The lenses can be made of various materials, including plastic, glass, or a combination of both. The most common types of lenses used in eyeglasses are spherical, cylindrical, and toric. Spherical lenses correct nearsightedness (myopia) or farsightedness (hyperopia), while cylindrical lenses correct astigmatism. Toric lenses combine both spherical and cylindrical corrections.

Eyeglasses can be categorized based on their design and purpose. Prescription glasses are designed to correct specific vision problems, while non-prescription glasses are used for fashion or protection. Reading glasses, also known as bifocals or trifocals, are designed to correct both near and far vision. Computer glasses are designed to reduce eye strain from prolonged computer use. Safety glasses are designed to protect the eyes from debris, chemicals, or other hazards.

Eyeglasses have been used for centuries to correct vision problems. The earliest known eyeglasses were made in Italy in the 13th century. They were simple convex lenses mounted in a wooden frame. Over time, eyeglasses have evolved to include a variety of lens types, frame materials, and designs. Today, eyeglasses are a common accessory worn by people of all ages. They are available in a wide range of styles and prices, making them accessible to people with different budgets and preferences.