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- Publisher
- American Medical Association
- Copyright
- Copyright © 1995 American Medical Association. All Rights Reserved.
- ISSN
- 0003-9950
- eISSN
- 1538-3687
- DOI
- 10.1001/archopht.1995.01100090064024
- Publisher site
- See Article on Publisher Site
Abstract
Abstract Objective: To evaluate the impact of age, various forms of cataract, and visual acuity on whole-field scotopic sensitivity screening for glaucoma in a rural population. Design: Clinic-based study with population-based recruitment. Setting: Jin Shan Township near Taipei, Taiwan. Subjects: Three hundred forty-six residents (ages, ≥40 years) of Jin Shan Township. Interventions: Whole-field scotopic testing, ophthalmoscopy with dilation of the pupils, cataract grading against photographic standards, and screening visual field testing in a random one-third subsample. Main Outcome Measures: Whole-field scotopic sensitivity (in decibels) and diagnostic status as a case of glaucoma, glaucoma suspect, or normal. Results: Participants in Jin Shan Township did not differ significantly in the rate of blindness, low visual acuity, or family history of glaucoma from a random sample of nonrespondents. Scotopic sensitivity testing detected 100% (6/6) of subjects with open-angle glaucoma at a specificity of 80.2%. The mean±SE scotopic sensitivity for six subjects with open-angle glaucoma (32.78±1.51 dB) differed significantly from that of 315 normal individuals (38.51±0.22 dB), when adjusted for age and visual acuity (P=.05, t test). With linear regression modeling, factors that correlated significantly with scotopic sensitivity were intraocular pressure, screening visual field, best corrected visual acuity, presence of cortical cataract, and increasing age. Conclusion: Although cataract affects the whole-field scotopic threshold, it appears that scotopic testing may be of value in field-based screening for glaucoma. References 1. Foster A. Patterns of blindness . In: Tasman W, Jaeger EA, eds. Duane's Clinical Ophthalmology . Philadelphia, Pa: JB Lippincott; 1990;5(chap 53):1-7. 2. Kass MA, Gordon MO, Hoff MR, et al. 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Journal
Archives of Ophthalmology – American Medical Association
Published: Sep 1, 1995
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