![Bifocals; a History of the Scientific and Mechanical Development of the Double-Vision Lens from the Time of Franklin with Chapters on the Prescription of Bifocals and Their Use 1923 [Leather Bound]](https://m.media-amazon.com/images/I/51mPL0UNc0L._SL500_.jpg)
Bifocals; a History of the Scientific and Mechanical Development of the Double-Vision Lens from the Time of Franklin with Chapters on the Prescription of Bifocals and Their Use 1923 [Leather Bound]
This 1923 volume examines the scientific and mechanical development of bifocals from Franklin’s time, with chapters on prescribing and using double-vision lenses. Featuring leather binding, golden-leaf spine printing, and sewn construction, it offers a distinctive edition for readers interested in optical and medical history.
About This Book
Bifocals presents a history of the scientific and mechanical development of the double-vision lens.
The work traces bifocal development from the time of Franklin and includes discussion of bifocal prescriptions.
It also addresses the use of bifocals, making the book relevant to readers exploring the historical relationship between optical science and practical vision care.
This 1923 edition features original leather binding on the spine and corners, golden-leaf printing on the spine, and sewing binding intended for durability.
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