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Titolo:
The prevalence and causes of bilateral and unilateral blindness in an elderly urban Danish population. The Copenhagen City Eye Study
Autore:
Buch, H; Vinding, T; La Cour, M; Nielsen, NV;
Indirizzi:
Natl Univ Hosp, Dept Opthalmol E 2061, Rigshosp, DK-2100 Copenhagen O, Denmark Natl Univ Hosp Copenhagen Denmark O shosp, DK-2100 Copenhagen O, Denmark
Titolo Testata:
ACTA OPHTHALMOLOGICA SCANDINAVICA
fascicolo: 5, volume: 79, anno: 2001,
pagine: 441 - 449
SICI:
1395-3907(200110)79:5<441:TPACOB>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
AGE-SPECIFIC PREVALENCE; BLUE MOUNTAINS EYE; BEAVER-DAM EYE; VISUAL IMPAIRMENT; MACULAR DEGENERATION; ACUITY; OLDER; BALTIMORE; DENMARK; VISION;
Keywords:
bilateral blindness; unilateral blindness; cause of blindness; epidemiology; prevalence; urban population;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Buch, H Natl Univ Hosp, Dept Opthalmol E 2061, Rigshosp, Blegdamsvej 9, DK-2100 Copenhagen O, Denmark Natl Univ Hosp Blegdamsvej 9 Copenhagen Denmark O agen O, Denmark
Citazione:
H. Buch et al., "The prevalence and causes of bilateral and unilateral blindness in an elderly urban Danish population. The Copenhagen City Eye Study", ACT OPHTH S, 79(5), 2001, pp. 441-449

Abstract

Purpose: To study the prevalence and causes of bilateral and unilateral blindness in an elderly urban Danish population. Methods: Data originated from a Danish epidemiologic cross-sectional random sample population eye survey conducted during the years 1986-1988. The population consisted of 1,000 inhabitants aged 60 to 80 years in Copenhagen. The participants underwent an extensive ophthalmologic examination. A participation rate of 96.9% was achieved. Any blindness was defined as best-corrected visual acuity (VA) worse than 0.05 (the WHO criteria) and VA of 0.1 or worse (the National criteria (NC) of blindness). Results: The prevalence rates of bilateral and unilateral blindness were, respectively, 0.53% and 3.38% according to WHO, but 1.06% and 4.44% using NC. Bilateral blindness rose significantly with age (p=0.02). According to NC, age-related macular degeneration (AMID) was the leading cause of bilateral blindness, accounting for 60% of all blind persons. Glaucoma, myopic macular degeneration, cataract and retinitis pigmentosa were jointly the second most common cause, each accounting for 10% of all bilaterally blind persons. Diabetic retinopathy was not a cause of bilateral blindness. Amblyopia was the most frequent, AMD the second most frequent, and diabetic retinopathy was among the third most common cause of unilateral blindness accountingfor, respectively, 28.60%, 16.66% and 9.52% of all unilateral blindness. Conclusions: Blindness was associated with increasing age. A calculation indicates that among Danes aged 60 to 80 years 7,736 are bilaterally blind and 35,503 suffer from unilateral blindness. This study highlights AMD as the most important cause.

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Documento generato il 24/01/20 alle ore 12:27:56