Jack E. Richman

Learn More
The use of presently available clinical oculomotor tests of a visual-verbal format are limited because they do not evaluate automaticity of number naming. There is a significant relationship between automaticity of number naming and reading performance. Presented is a new oculomotor test that has a specific method to factor out the consequences of(More)
BACKGROUND The ability to clinically use Contrast Sensitivity Function (CSF) in adults for detection of visual pathway disorders has been demonstrated. The results of CAF testing would be especially meaningful clinically for young children for earlier diagnosis and treatment of visual disorders. In preschool children (ages 3-5 years), CSF assessment has(More)
BACKGROUND Stereopsis testing is commonly used to assess the presence and level of binocular vision. A new series of stereopsis tests requiring no polarized goggles are available in the form of the Titmus Stereo Test, the Stereo Reindeer Test, the Random Dot Butterfly, the Random Dot Figures, and the Random E, Circle, Square. These polarized-free tests(More)
46 young adult men and women (mean age 19.7) were evaluated with a clinical test of binocular accommodative facility utilizing +1.00/-1.00 and +2.00/2.00 lenses. All of the subjects passed a clinical screening of binocular functioning. There were no significant differences between men and women in the number of cycles completed with either lens power and,(More)
An evaluation of the visual acuity levels obtained with the candy bead test (Bock) was performed. White beads (1 mm) were placed on a white felt background under controlled illumination. Ten subjects were required to localize randomly placed beads through increased degrees of induced optical blur. The visual acuity was then measured at the blur level(More)
BACKGROUND The Developmental Eye Movement Test (DEM) is a popular visual-verbal saccade test. An advantage of the DEM is that patients with below-average verbalization or automaticity can be distinguished from patients with eye movement coordination problems. The standardized norms for the DEM were previously determined in a sample of suburban and urban(More)
OBJECTIVES The prevalence and necessity for early detection of vision problems illustrate the need for improved methods of vision screening in preschool children. This study assessed the validity and reliability of a new device, the MTI photoscreener in a cross-sectional field study. METHODS An appropriate sample size (> 140) was calculated and recruited(More)
The purpose of this study was to establish a practical basis of comparison among three clinical tests designed to measure an observer's spatial contrast sensitivity function (CSF): the AO contrast sensitivity test plates (Arden grating test), the Vistech VCTS 6500 chart, and the Nicolet CS-2000 contrast sensitivity testing system (Optronics system). Each(More)
This study describes a new visual acuity test for preschool and exceptional children. It is independent of verbal responses, uses a forced-choice testing procedure, incorporates the psychometric design advantages of the Landolt ring, and can be administered at 3m (10 ft) in 5 to 7 minutes. The results support its construct validity in accurately measuring(More)
BACKGROUND The Drug Evaluation and Classification (DEC) program was developed to detect, arrest, and convict drivers impaired by drugs other than alcohol. The DEC program is a training program designed to prepare police officers and other qualified persons to serve as Drug Recognition Experts (DREs). PURPOSE The purposes of this study were: (1) to(More)