Phosphenes and retinal images. 19th-century artwork of the appearance of rings of light,produced by pressure on the eyeball (centre). These patterns (crescent shapes) are called phosphenes,in this case caused by mechanical pressure on the retina. This diagram explains the effects of pressure on four different points. This artwork is from 'Essai sur les phosphenes' (Essay on Phosphenes,1853) by French physician Henri Auguste Serre (1802-1870) | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / King's College London |
Taille de l’image : | 3872 px × 4563 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |