Threshold luminance necessary to evoke an eye movement was evaluated as a function of age (6-21 years) and visual angle (6-42 degrees from the fovea). (BRT)

Clinical techniques for visual screening of infants that are not used in routine pediatric examinations include optokinetic nystagmus, preferential looking, and visually evoked potential. Greater use of such techniques might increase success of nonsurgical remedial intervention. (CL)

The use of an optometric consultant to evaluate a student's educational handicap relating to vision is discussed. (CD)

The article describes a vision screening program in Manitoba to identify high-risk children. Organizational strategies, instrumentation, and results of a study of the effectiveness of the screening process with 732 children are detailed. (Author)

Compared was the incidence of lateral phoria, a tendency for the eyes to turn in or out, in 45 elementary grade learning disabled children and 364 children in regular elementary education classes. (DB)

Discusses student learning difficulties linked to visual disorders such as dyslexia and amblyopia, problems associated with current school vision-screening procedures, and recommendations to improve preschool and in-school vision-screening practices with an emphasis on early, regular, and comprehensive eye examinations. (PKP)

The manual was intended to help school personnel (either an educator of the visually handicapped and/or a certified orientation and mobility instructor) evaluate the functional use of residual vision. The manual is organized in three major sections, which cover the following: (1) the general areas addressed in functional vision evaluation (such as…

The relationship between vision and reading achievement is complex. In this paper, a number of terms relating to vision are defined and some of the limitations of specific measures of vision are discussed. In order to relate vision to reading, it is necessary to segment arbitrarily the continuous process of vision into a series of subsystems, or…

National estimates based on the findings from the Health Examination Survey in 1963 to 1965 of uncorrected monocular and binocular visual-acuity levels of children were studied. A nationwide sample of 7,417 children was selected to represent the approximately 24 million noninstitutionalized American children between ages 6 and 11 years. Testing…

This bulletin explains some of the visual characteristics of children and youth, examines critically the vision screening tests used in some schools, and explains the problems resulting from their use. Chapters deal in turn with vision and visual characteristics, the professional eye examination, visual screening tests, problems in referrals from…

Consonant identification was examined in four profoundly hearing-impaired children (ages 13-14) under five conditions. Performance was better in the vision alone condition than audition alone using hearing aids in free-field. No consistent differences were recorded across three auditory-visual conditions, including one with syllabic compression…

Changes in visual screening procedures that may have occurred over 5 years were investigated. Parameters surveyed included procedures, times, sources of referrals, and personnel. A majority of districts continue to rely on far-point acuity testing. However, in cases where reading problems exist, greater use of vision specialists can be found.…

In 73 children (6-13 years old) with reading difficulty, ophthalmological evaluation showed that 18 had overt refractive errors, 18 dyslexia and no ocular anomalies, and 37 impaired fusional amplitudes, 24 of whom were dyslexic. In all Ss with poor fusional amplitudes the reading mechanism could be improved with orthoptic exercises. (Author/CL)

The purpose of this book goes beyond a procedural manual or a "how-to, cook book" approach to vision screening. This book is intended to assist the new school nurse in fully understanding the screening process, comprehending the pathophysiology of the several visual functions, which may be assessed in the school setting. This book is also intended…