Visual impairment in Nordic children

Rosenberg, Thomas; Flage, T; Hansen, Egill; Sl, Rudanko; Viggosson, G; Riise, Ruth

doi:10.1111/j.1755-3768.1992.tb04119.x

Cited by 35 publications

(14 citation statements)

References 16 publications

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“…In this study, as well as in the one by Rosenberg et al (1992), the infantile/juvenile group was small, 7.2%. Historically, infections causing visual impairment were predominantly corneal infections (Norrie 1927) and this is still true in some parts of the world (Foster & Gilbert 1992).…”

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confidence: 91%

“…The prenatal period was defined as the time from conception to beginning of labour. The peri-/neonatal period includes labour, birth and the first 28 days of life w i s e et al 1992a; Rosenberg et al 1992). The fourth group (unknown) included those where no other etiological cause could be found through medical records and search for additional information.…”

Section: Methodsmentioning

confidence: 99%

“…In the Nordic countries there exists a well established tradition of registration of visual impairment (Norrie 1927;Holst 1950;Skydsgaard 1955;Vannas & Raivio 1964;Lindstedt 1972;Halldorsson & Bjornsson 1980;Hansen 1981;Rosenberg 1987). In 1990 data on 2527 visually impaired children included in the national registers in Denmark, Finland, Iceland and Norway were compiled into a common database by the so-called Nordsyn study group (Riise et al 1992a,b;Rosenberg et al 1992;Hansen et al 1992;Rudanko et al 1993). The Swedish register formed in the 1960's (Lindstedt 1972(Lindstedt , 1975a had not been kept updated and Sweden could thus not be included in this common Nordic work.…”

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confidence: 99%

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Visual impairment in Swedish children

Blohmé

Törnqvist

1997

Acta Ophthalmologica Scandinavica

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ABSTRACT. The analysis of etiological factors in a group of visually impaired children is of considerable importance when trying to find guidelines for possible preventive work. In this study we present etiological data on 2373 Swedish children. Data have been obtained by reviewing medical records on all known children with visual impairment throughout the country. In accordance with similar studies from industrialised countries, the group with prenatal etiology was the predominant, comprising 64% of the material. Within this group, half the patients had a disease of genetic origin. A total of 50% of all patients with prenatal etiology had an additional impairment, but in the group with diseases of genetic origin this proportion was smaller, only 40%. On the other hand, many children with additional impairments were found among those with an unspecified prenatal influence. Peri-/neonatal etiologies were found in 20% of the patients. In this group as many as 83% had additional impairments. This was even more pronounced among children delivered at term. The group with infantile/juvenile etiologies was small, 7%, with additional impairments in 66%. In 9% of all patients the etiology was classified as unknown. Among these, 80% had additional impairments. The visual impairment tended to be more pronounced, the later the disease was acquired. A male preponderance was seen in most etiological subgroups and in the material as a whole.

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confidence: 91%

Section: Methodsmentioning

confidence: 99%

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confidence: 99%

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Visual impairment in Swedish children

Blohmé

Törnqvist

1997

Acta Ophthalmologica Scandinavica

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“…In 1990 data from the continuous registration in Denmark, Finland, Iceland and Norway were compiled into a common database, resulting in a register of 2527 children altogether. Based on this a thorough analysis was made of prevalence, etiologies and diagnoses Rosenberg et al 1992;Hansen et al 1992). Sweden could not be included, since the earlier registration (Lindstedt 1972(Lindstedt , 1975 had been dormant.…”

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confidence: 99%

Visual impairment in Swedish children

Blohmé

Törnqvist

1997

Acta Ophthalmologica Scandinavica

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ABSTRACT.hrrpose: To gain an overview of the spectrum of diagnoses among Swedish visually impaired children. Methods: An epidemiological study of all known visually impaired children was made by review of medical records. Resultsandconclusion: In all we found 2373 children, 0-19 years of age, with an age-specific prevalence of 10.9/10 000. The two largest diagnostic groups included neuro-ophthalmological and retinal diseases. The most frequent disorders were cerebral visual impairment, non-hereditary optic atrophy, retinal dystrophy (when regarded as a general entity), congenital hypoplasia of the optic nerve and congenital cataract. Nystagmus secondary to brain disorder, albinism, congenital nystagmus, retinopathy of prematurity and high myopia were also found in a considerable number of patients. The leading diagnoses in children with WHO-defined childhood blindness were non-hereditary optic atrophy, cerebral visual impairment and retinopathy of prematurity. A large proportion of the children, especially in the groups with neuro-ophthalmological disorders and malformations of the posterior segment had additional impairments, emphasizing the importance of a multi-disciplinary approach when assessing multi-handicapped children.

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“…In Hong Kong, retina accounted for 47.6% (39 students) (ROP, 21 students), optic nerve and CNS diseases were found among 17.1% [19]. Among those countries, the common aetiologies were prenatal factors, including genetic diseases and perinatal factors, including prematurity [16][17][18][19][20]. As neonatal services continue to improve, blindness from ROP is now largely reported only in premature babies with very low birth weight (less than 1.500 grams at birth) and extremely low birth weight group (less than 1.000 grams at birth) [15,[21][22][23].…”

Section: Discussionmentioning

confidence: 99%