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At least 145 records · Page 8Linked to original sources
PubMed1977

Vision tests as predictors of learning disabilities.

Three relatively new screeening tests for visual problems are described. They are color matching, visual language field development, and the speed of the visual language field development, and the speed of the visual scan. The visual problems so measured were found to be associated with poor school achievement. In color matching, only blue was involved, not red or green, and proficiency was relatively undeveloped before age 10. Throughout, blue matching difficulty was associated with poor visual language field development, but not with slow scanning. Early screening with these tests offers possibilities for early detection of students with potential learning problems.

Adolescent↗
PubMedDate not supplied

Better industrial vision testing and safety.

In no sense should an industrial vision program be considered a means of providing visual ease, comfort for off-the-job activities such as viewing television.

Eye Injuries↗
PubMed2003

Sports vision testing of selected athletic participants in the 1997 and 1998 AAU Junior Olympic Games.

BACKGROUND: Sports vision researchers have attempted to establish the need for vision care services for athletes and the relationship between visual skills and athletic success. METHODS: Data collected from sports vision screenings at the 1997 and 1998 Amateur Athletic Union AAU Junior Olympic Games was compiled for analysis. Four hundred forty-nine athletes, ranging in ages from 5 to 19 years old and representing 12 sports, were part of the sports vision epidemiology project conducted by the American Optometric Association Sports Vision Section. Protocols from the AOA Sports Vision Section were used to assess the visual systems of athletes participating in the games. The history included evaluation of the use of vision care services, refractive correction type, and symptomology. The screening assessed visual acuity, contrast sensitivity, ocular alignment, eye-hand dominance, handspeed, footspeed, speed of stereopsis, speed of recognition, eye movements, hand-eye coordination, anterior-segment health, and posterior-segment health. Performance testing was analyzed by age group and sport. RESULTS: In this population of athletes, eye care was under-utilized. The performance testing indicated an increase in performance with increasing age for most tests. With increasing age, there was a decrease in the number of fixation losses, an increase in footspeed, and a decrease in handspeed. The norms for the performance tests are reported by age group and by sport. CONCLUSIONS: The results of this study imply that athletic populations at all levels are in need of eye care services. The norms derived from this investigation act as a standard for the evaluation of vision performance using the AOA Sports Vision Testing Battery.

Adolescent↗
PubMed1989

Note on color preference and color vision test performance.

The incidence of color deficient vision was investigated using the Pseudo-Isochromatic Plates on a relatively large and representative group. In the sample of 112 adults aged 20 to 80 yr. and comprised of 53% women and 12% minorities, 8% of men and 3% of women were color deficient. Over-all performance indicated no effects for sex or race. Nearly half of the plates were nondiscriminating among sex, minority/majority, and "normal" and "defective" color vision groups. Named color preferences within the "normal" group strongly favored blues and reflected no sex differences.

Adult↗
PubMed1986

Color vision tests to identify elevated digoxin levels.

The purpose of this study was to determine the usefulness of color vision screening in identifying patients with elevated digoxin levels (greater than or equal to 2.0 ng/ml). Test-retest color vision measurements were obtained on 56 subjects with elevated digoxin levels and 93 non-digoxin subjects. Two tests, the Ishihara and Sahlgren's Saturation Test (SST), identified digoxin levels of 2.9 ng/ml or more. These tests also yielded a high percentage of improved retest scores among subjects with elevated digoxin levels (greater than or equal to 2.7 ng/ml) of more than 4-days duration and a low percentage of improved retest scores among the non-digoxin group. The Ishihara, SST, and other bedside color vision tests may prove useful in the routine monitoring of patients on digoxin therapy, especially those with a high risk for toxicity.

Adult↗
PubMed1997

Evaluation of Kojima-Matsubara color vision test plates: validity in young children.

PURPOSE: We examined a pseudoisochromatic color plate test by Kojima and Matsubara for young children which uses drawings of familiar objects rather than letters or numbers. First, we evaluated the test's efficacy as a color deficiency screener and its validity in classifying the types of color deficiencies by comparing its results with those from the Moreland anomaloscope. Second, we eliminated the chromatic factor and evaluated the functional ability of young children to perform the task by determining how many correct responses were obtained using modified black/white replicas of the test plates. METHODS: Part 1: Twenty color-normal and 13 color-deficient adults were diagnosed and classified with the Ishihara test, Panel D-15 test, and anomaloscope. Subjects were then tested with the Kojima-Matsubara test and result were compared with those from the anomaloscope. Part 2: Fifty children aged 3 to 7 years were tested with modified black/white test plate replicas. The number of correct responses for each plate was determined for five different age groups. RESULTS: Part 1: Among the 20 color-normal subjects, 18 read all 10 plates correctly and 2 subjects missed 1 of the 10. Only 1 of the 13 color-deficient subjects exhibited the expected responses for plates 2 to 6 (used for color deficiency screening). The color-deficient subjects' responses for plates 7 to 10, which are used to classify red-green defects, were varied and only the protanomalous subjects (n = 2) followed the expected response pattern. Part 2: Of the 10 black/white modified plates, only 2 were correctly identified by all 50 children. The other plates had a recognition rate that ranged from 32 to 98%. CONCLUSIONS: Because the response patterns given by most of the color-deficient adult subjects were different from those in the test manual, ambiguous results would occur if the Kojima-Matsubara test were used for color vision screening or the diagnosis of color deficiency. In addition, the difficulty that many of the young children exhibited in identifying the objects in the black/white replica plates suggests that there would be a large number of false positive errors (classifying a color normal as color deficient) when using this test in young children.

Adult↗