Front view of an optometer. An optometer is a device used to assess the range and power of vision. The earliest reference to optometry was by English friar,Roger Bacon (1214-1292) who in 1263 described the use of lenses for those with weak eyes. By the 1900s optometry had become an established profession. This device dates from 1900,England | |
Licence : | Droits gérés |
Crédit: | Science Photo Library |
Taille de l’image : | 4168 px × 4192 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |