![](http://www.alamy.com/thumbs/6/3320205F-2578-448D-B3DF-1EF108E7B8CE/2F70N20.jpg)
Convex-cylindrical glass lens. Illustration of the 19th century. Germany. White background.
Size: 4500px × 3814px
Photo credit: © Kohl-Illustration / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: ancient, antique, background, black, book, convex, correction, cylindrical, design, engraving, eye, germany, glass, health, heritage, historical, history, human, illustration, image, lens, lithography, medical, medicine, ocular, ophthalmologist, optics, optometrist, organ, picture, retro, scan, sense, style, vintage, vision, white