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.
| Cyhoeddwyd yn: | IEEE Engineering in medicine and biology magazine 25, 2 (2006). |
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| Prif Awdur: | |
| Fformat: | Erthygl |
| Iaith: | English |
| Pynciau: |