Pantoscopic spectacles are eyeglasses with lenses that curve around the face to offer a wider field of vision. The word "pantoscopic" is spelled /ˌpæntəˈskɒpɪk/ and is derived from the Greek words "pan" meaning "all" and "skopein" meaning "to see." The "panto-" prefix is used in other words such as "pantheon" and "panoramic" to indicate a wide view. The spelling of "spectacles" is straightforward, /ˈspɛktəkəlz/, and refers to eyeglasses in general. Together, the term "pantoscopic spectacles" refers specifically to eyewear with a wider field of vision.
Pantoscopic spectacles are a type of eyeglasses specifically designed to provide a wider field of vision for the wearer. The term "pantoscopic" originates from the Greek words "pan" meaning "all" and "skopein" meaning "to see," suggesting that these spectacles aim to enable a broader visual perception.
Typically, pantoscopic spectacles feature lens frames with a distinct curvature, allowing the lenses to follow the natural contours of the wearer's face. This design characteristic ensures that the entire range of the wearer's vision is properly covered by the lenses, including significant peripheral vision. By providing a wider field of view, pantoscopic spectacles enhance the wearer's ability to see objects or events occurring on the sides without the need for head turning.
Additionally, pantoscopic spectacles are often prescribed for individuals who require corrective lenses due to their myopia (nearsightedness) or hyperopia (farsightedness). The curvature of the lenses helps to compensate for the refractive errors of the eyes, thereby improving focusing ability and visual clarity.
Pantoscopic spectacles are commonly used for a variety of daily activities, such as reading, watching TV, driving, or engaging in sports. Their design and functionality make them a practical choice for individuals seeking eyeglasses that offer a wider range of vision, alongside the necessary vision correction.
Bifocal s.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The term "pantoscopic spectacles" is derived from the combination of two words: "pantoscopic" and "spectacles".
The word "pantoscopic" is composed of two elements: "panto-" and "-scopic".
- "Panto-" comes from the Greek word "pantos", meaning "all".
- "-scopic" is derived from the Greek word "skopein", which means "to see" or "to observe".
Therefore, "pantoscopic" is a term that indicates the ability to see or observe in all directions.
On the other hand, "spectacles" refers to a device for vision correction or protection that consists of two lenses held in a frame placed in front of the eyes. The word "spectacles" originates from the Latin word "spectaculum", meaning "a show" or "a spectacle".