Eyestrain in inspection and clerical workers

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Abstract
An attempt was made to measure eyestrain among inspection workers in highly mechanized industrial production, and to compare it with that occurring in general clerical workers. Visual functions were studied, both ocular and in the central nervous system, to clarify their patterns and their mutual relations during work. In inspection work, an improvement in accommodation was observed during the morning session. During the rest of the day accommodation was found to decrease more in inspection work than in clerical work. Visual function in the central nervous system, measured as critical flicker fusion frequency, started to decline shortly after the beginning of work and continued to deteriorate with time, both in clerical work and inspection work. In inspection work, there was an antagonistic relationship between peripheral and central visual functions in the morning session, whereas in clerical work, these two functions both deteriorated. In the afternoon session, these visual functions fluctuated considerably, and no systematic trends were seen either in inspection work or in clerical work.

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