Where did the big E come from?.

The paper explains how the big E on the Snellen chart that is used to measure the visual acuity of each eye originated.

Bibliographic Details

Published in:	IEEE Engineering in medicine and biology magazine 25, 2 (2006).
Main Author:	Geddes, L.
Format:	Article
Language:	English
Subjects:	Snellen chart. Big E. Eye. Visual acuity.