An elementary physical model of cone receptor cells is explained and applied to complexities of human color vision. One-, two-, and three-receptor systems are considered, with the later shown to be the best model for the human eye. Color blindness is also discussed. (DH)

To break the bottleneck inherent in today's linear computer architectures, parallel schemes (which allow computers to perform multiple tasks at one time) are being devised. Several of these schemes are described. Dataflow devices, parallel number-crunchers, programing languages, and a device based on a neurological model are among the areas…

This reference circular contains information about large-print materials. Section 1 is an annotated list of selected sources of large-print materials available for purchase or loan. The sources are publishers or distributors, specialized libraries, and associations for persons with visual impairments. Several of these sources also provide general…

Sports-related eye injuries are quite common, yet the number of children who use protective eyewear (safety glasses or goggles) is extremely low. More than 600,000 eye injuries related to sports occur each year, and approximately one-third of these injuries occur in children. When children participate in sports they not only increase their…

Compaired are methods of determining visual refraction needs of young children or other unreliable observers by means of retinosocopy or the Opthalmetron, an automatic instrument which can be operated by a technician with no knowledge of refraction. (DB)

Auditory and visual recognition were studied in subjects ranging in age from 10 to 60 years. In comparison with perceptual and response factors, memory scanning time is relatively insensitive to age differences, and auditory recognition involves the use of a pre-linguistic memory system insensitive to age differences. (Author/MF)

The effects of passive exercise of the extremities on peripheral vision of muscular dystrophic children aged 9 to 13 years was investigated. Compared to control subjects, those who experienced six minutes of passive exercise evidenced increased peripheral vision. Curriculum revisions for muscular dystrophic children indicate the importance of…

Discusses issues related to possible health hazards associated with viewing video display terminals. Includes some findings of the 1979 NIOSH report on Potential Hazards of Video Display Terminals indicating level of radiation emitted is low and providing recommendations related to glare and back pain/muscular fatigue problems. (JN)

The role of optometry in the study of learning difficulties and the problems of interpreting research results in the fields of optometry and ophthalmology are discussed. Limitations of school visual screening are described, and it is suggested that many children with learning difficulties should be referred for a full clinical visual examination.…

All children have intelligence in varying degrees in various abilities; Structure of Intellect (SOI) Institute tests diagnose those abilities successfully in gifted, deaf, retarded, aphasic and all ethnic groups. With a database of thousands of student test responses, materials are developed to prepare children for the future. (NEC)

Provides information regarding underwater vision. Includes a discussion of optically important interfaces, increased eye size of organisms at greater depths, visual peculiarities regarding the habitat of the coastal environment, and various pigment visual systems. (CS)

Four experiments involving 367 college students and 259 sixth graders demonstrate that children and adults, when asked to represent vision schematically, have a bias to draw arrows pointing away from the eye and toward a visual efferent. The role of this type of representation in learning is discussed. (SLD)