A discription of teaching activities and seeing distances makes it easier to prescribe correct lenses. (AP)

Presents two studies which investigated the relative importance of various features in the discrimination of faces. (SDH)

Rod-isolation techniques show that light-adapted human rods detect flicker frequencies as high as 28 hertz, and that the function relating rod critical flicker frequency to stimulus intensity contains two distinct branches. (MLH)

Examines research related to the retina's coding of visual input with emphasis on the organization of two kinds of ganglion cell receptive fields. Reviews current techniques for examining the shapes and arrangement in the retina of entire populations of nerve cells. (ML)

Describes an experiment revealing a visual latency effect produced by the wearing of sunglasses. (SL)

Eye movement data indicate that perceptual efficiency increases with familiarization of graphemes. Research supported by grant from National Institute of Health. (DS)

Special equipment was used to record the eye movement patterns of 60 children enrolled in a reading clinic. There were 20 children in each of three groups: good readers, slow readers, and non-readers. The children were shown printed material on a screen accompanied by action sequences and voice recordings similar to what they might see on…

This activity book teaches elementary school students about good vision and eye safety through a combination of puppet plays, stories, songs, and games. Nine games are provided to help children develop vision skills including visual memory, visual perception, directionality, spatial orientation, and visual-motor responses. Master Plans for making…

Summarizes the anatomical, physiological, and psychological evidence related to the primate visual system. States that comparison of perceptual abilities with the electrophysiological properties of neurons may help deduce functions of visual areas. (RT)

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…