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Results for “Vision Screening”

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At least 685 records · Page 38Linked to original sources
PubMed2005

Projected color slides as a method for mass screening test for color vision deficiency (a preliminary study).

This article compared the efficiency of the mass screening test with projected color slides in detecting color-blindness with the authentic classic method of Ishihara. The study was conducted in a randomly selected lecture room with 104 students aged between 19-25 years (median 21). Using Ishihara projected slides, performed mass screening test. Re-testing was done individually with printed Ishihara plates. Six male and one female with color-blindness were detected. The frequency of color-blindness was 13.6% among males, with a total incidence of 6.7%. The results of two testing methods were compared statistically. Sensitivities and specificities of both tests were 100%. Using projected slides of Ishihara plates instead of the authentic method is an effective and timesaving method for detecting color-blindness. This method can be suggested as a mass-screening test and might be beneficial in detecting color-blindness in large populations such as students, soldiers, and so on.

Adult↗
PubMed2000

Zebrafish on the move: towards a behavior-genetic analysis of vertebrate vision.

Behavioral screens have uncovered dozens of zebrafish mutants with striking visual defects. In parallel with mutant studies, recent psychophysical experiments indicate that zebrafish are capable of high-level motion processing, previously thought to be restricted to animals with a visual cortex. It should be possible now to devise assays to screen for mutations in visual perception.

Animals↗
PubMed1998

A new school-based program to provide eyeglasses: childsight.

OBJECTIVE: To address the unmet need for glasses encountered in an urban school setting by developing and implementing a school-based, cost-effective program that provides appropriate spectacle correction to needy children. METHODS: A total of 5851 students 9 to 15 years of age in 4 middle schools in northern Manhattan were screened for vision. Those with vision worse than 20/40 were examined, given glasses if appropriate, or referred for additional evaluation. RESULTS: Of the 5851 children screened, 1614 (28%) had a failing result, with visual acuity less than 20/40 in the worse eye. Of this group, 1082 were given glasses that were assembled at the school within 1 hour of testing. Ten percent of the group that required glasses already had them, and the remaining were referred for a complete ophthalmic examination that was completed in 58 cases. Only 14 of these had vision loss unrelated to refractive error. CONCLUSIONS: The program successfully treated 88.3% of the children within the school who needed glasses. Given that only 10% of children who needed glasses had them, it indicates a huge need to provide glasses to at least a million children in this age group in the United States.

Adolescent↗
PubMed1997

Communication screening in older adults with vision loss.

25 older adults with vision loss participated in a communication screen which included hearing, speech-language, and a self-assessment of communication. 64% failed at least two of the three screenings, suggesting that routine screening might identify older adults with vision loss who need rehabilitation in communication as a complement to visual rehabilitation.

Aged↗
PubMed1989

[Screening of early color vision loss in diabetic patients].

Colour vision defects have been claimed to appear in diabetes before any retinopathy is visible. In the present study diabetic patients and non diabetic control subjects were screened with two different colour vision tests which include both red-green and blue-yellow parts, and are suitable for quantitative analysis of scores. The Lanthony 40 Hue test and the Tokyo Medical College--T.M.C. tables were used to assess colour vision in 106 diabetic (50 insulin dependent and 56 non insulin dependent) patients and in 99 non diabetic control subjects. Diabetic patients without visible retinopathy, familiar colour vision defects and/or lens changes, had significantly higher scores than control subjects in both eyes. The differences were more evident in non insulin dependent patients. Statistical analysis showed that early loss of colour vision was correlated with age and duration of diabetes for older patients, while correlation with glycosylated hemoglobin was moderately positive only for younger patients. Both tests (especially the Lanthony 40 Hue) resulted to be highly specific and could be used for the clinical study of colour vision losses in diabetic patients.

Adult↗
PubMed2002

Kindergarten health assessment reports: what do schools really learn from them?

The kindergarten health assessment report (KHAR), mandated by most states, is used to identify children at school entry with any health problems that may interfere with school performance. The objective of this study was to review the completeness and accuracy of the reports that schools receive from health care providers. By analyzing 3,952 KHARs of children enrolled in the Guilford County (North Carolina) Public Schools during the 1999-2000 school year we found that only 20% were fully completed and only 32% recorded results of all 6 required screening tests. Results of the 3 screening tests most applicable to school readiness: vision, hearing, and developmental screening, were documented only 55% of the time. Providers failed to properly classify 75% of children who were either underweight or overweight. Abnormal vision screening results were noted in 485 (14.2%) children, of whom only 38% were recommended for follow-up. Results of vision and hearing screening were recorded in only 50% of children noted to have developmental concerns. The information recorded on the kindergarten health assessment forms is incomplete and frequently inaccurate. These findings arouse concern, given that these forms constitute the basis for school districts to identify those children who may have medical problems.

Child Welfare↗
PubMed2004

Preventing visual loss from chronic eye disease in primary care: scientific review.

CONTEXT: Vision loss is common in the United States and its prevalence increases with age. Visual disability significantly impacts quality of life and increases the risk of injury. Although at least 40% of blindness in the United States is either preventable or treatable with timely diagnosis and intervention, many people with vision loss are undiagnosed and untreated. OBJECTIVE: To review the evidence regarding screening and management of eye disorders and visual disability among adults in the primary care setting. DATA SOURCES AND STUDY SELECTION: MEDLINE, HealthSTAR, EMBASE, The Cochrane Database of Systematic Reviews, and the National Guidelines Clearinghouse were searched for articles and practice guidelines about screening and management of eye diseases and vision loss among adults in the primary care setting using key words and free-text terms, such as vision screening, glaucoma prevention and control, from 1985 to 2003. References in these articles and those suggested by experts in eye care, vision loss, and vision screening were reviewed as well. DATA EXTRACTION: Articles were searched for the most clinically important information and emphasized randomized controlled trials where available. DATA SYNTHESIS: Most major guidelines recommend periodic referral of older adults to an eye care professional for comprehensive evaluation to detect eye diseases and visual disability. The value of routine screening for vision loss in the primary care setting has not been established. Timely identification and treatment of eye diseases can substantially reduce the incidence and prevalence of visual disability among older adults. Optimizing management of systemic diseases, such as diabetes, hypertension, and hyperlipidemia, significantly reduces the risk of related eye disorders. CONCLUSIONS: Primary care clinicians can play a vital role in preserving vision in their patients by managing systemic diseases that impact eye health and by ensuring that patients undergo periodic evaluations by eye care professionals and receive needed eye care.

Adult↗
PubMed1991

[Mass screening of blue color vision in divers with the desaturated Lanthony-15-Hue Test].

We tested 1002 persons, 572 divers (including 38 who had diving accidents) and 430 nondivers, for defects of the blue-sensitive system during the years 1988 and 1989. Recent research has shown functional disorders of color vision in divers, linked to previously described alterations of the retinal capillary system and pigment epithelium. The desaturated Lanthony-15-HUE test was used as a screening method. No defect of the blue-sensitive system was found, either in divers or in nondivers. Our results are similar to those of other researchers. One exception was that we found no correlation between age and error score. We found no evidence for retinal damage caused by diving.

Adult↗
PubMed2004

The internist's role in managing diabetic retinopathy: screening for early detection.

Although laser treatment keeps vision damaged by diabetic retinopathy from becoming worse, it only rarely improves vision. If primary care physicians wait until the patient complains of blurred vision, it is too late--there is already permanent retinal injury, and the lost vision almost never can be restored. Unfortunately, only half of patients with diabetes undergo an appropriate examination every year. Only by teamwork between primary care physician and ophthalmologist can blindness from diabetic retinopathy be reduced.

Blindness↗