In this report, vision screenings conducted by large metropolitan area schools are reviewed. Data were generated by 10 participating schools in five school districts who responded to five research questions: (1) Do you do vision screening? (2) What do you test for? (3) Who conducts the vision screening in your school? (4) What grade levels are…

The question of whether pupil diameter indicates information processing load during reading was investigated in three experiments involving 24 college students reading passages of varying difficulty. A TV camera and monitor, together with a video-recorder, were used to measure the diameter of the pupil under a reading condition and under three…