Test-retest reliability of the CSV-1000 contrast test and its relationship to glaucoma therapy.
Invest Ophthalmol Vis Sci
; 35(9): 3357-61, 1994 Aug.
Article
em En
| MEDLINE
| ID: mdl-8056510
ABSTRACT
PURPOSE:
To determine the relationship between changes in contrast sensitivity, if any, after glaucoma therapy and the test-retest reliability of the CSV-1000 contrast sensitivity test.METHODS:
Patients with primary open angle glaucoma (N = 16) were retrospectively evaluated to determine changes in visual function, as measured by contrast sensitivity, after beta-blocker therapy. A control group (N = 24) of normally sighted patients was tested and retested on contrast sensitivity. For the control group, the coefficients of repeatability (95% confidence interval for test-retest variability [COR]) were calculated for each spatial frequency. The CORs were compared to the changes in vision found after therapy in the patients with glaucoma.RESULTS:
The group with glaucoma showed a significant improvement (P < .01) in contrast sensitivity at all spatial frequencies. The test-retest variance for normals, as measured by the COR, was smaller than the mean differences in contrast sensitivity before and after therapy at all spatial frequencies, expect 18 cyc/deg.CONCLUSIONS:
Visual function in patients with glaucoma, as measured by contrast sensitivity, does improve after beta-blocker therapy. Further, the CSV-1000 is a clinically reliable tool for monitoring these changes.
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Base de dados:
MEDLINE
Assunto principal:
Transtornos da Visão
/
Testes Visuais
/
Sensibilidades de Contraste
/
Glaucoma de Ângulo Aberto
Tipo de estudo:
Observational_studies
Limite:
Aged
/
Humans
/
Middle aged
Idioma:
En
Revista:
Invest Ophthalmol Vis Sci
Ano de publicação:
1994
Tipo de documento:
Article