The purpose of the green visor or eyeshade is to lessen eyestrain.
Bright, glaring overhead lighting used to be the norm in many offices.
This could cause difficulties for workers who had to focus on small
details such as columns of figures or printed text.
"Green eyeshade' or 'green eyeshades' is a term often used as an
adjective referring to activities related to accounting, auditing,
fiscal management, economics or budgeting. The term can be also
applied derogatorily to individuals who are excessively concerned with
pecuniary matters or small and insignificant details. The term refers
to visors that were worn most often from the late 1800's to the middle
1900's by accountants, telegraphers, copy editors and others engaged
in vision-intensive, detail-oriented occupations. These visors were
often though not always made of a transparent dark green or blue green
colored plastic precursor known as celluloid and were intended to
shield the eyes from eyestrain and other effects of early incandescent
lights, that tended to be harsh."
Wikipedia: Green eyeshade
"Regarding the 'Green Eyeshade': In the old days copy editors wore
green eyeshades to cut down on glare, as did accountants and
The Wit of the Staircase
"This made me remember a stereotypical picture of an accountant or an
editor: in cartoons they seem to wear those funny little green visors.
Now I understood their purpose - it's to cut down on the glare...
These days it seems that the only professionals who wear green
eyeshades are casino dealers."
My Google search strategy:
Google Web Search: accountants green visor OR eyeshade
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