The values of critical fusion frequency (CFF) of 6 weak-sighted pupils were measured as an indicator for measurement of their fatigue caused by lessons in school during a week. The values of CFF showed remarkable individual variations regardless of their visual acuity, and the values were very low in some of them as compared with the control. CFF decreased daily in a week. The desirable arrangement of lessons for weak-sighted pupils is discussed.
About this Journal The Tohoku Journal of Experimental Medicine (TJEM) was founded in 1920
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