Bifocal glasses. Pair of reading glasses resting on an open book. Bifocal glasses have two distinct regions in each lens. The majority of the lens is made to correct long-distance vision,while the lower portion enables the wearer to read and perform delicate tasks | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Horrell, Steve |
Taille de l’image : | 4931 px × 3604 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |