Prevalence and causes of visual impairment and blindness among 9980 Scandinavian adults

Buch, Helena; Vinding, Troels; Cour, Morten la; Appleyard, Merete; Jensen, Gorm; Nielsen, Niels Vesti

doi:10.1016/j.ophtha.2003.05.010

Cited by 325 publications

(237 citation statements)

References 40 publications

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“…3 Published papers on the status of visual impairments in different countries reveal that these impairments are problematic in developed countries, as well as developing ones. 4,5 Cataract, as the primary cause of blindness, is responsible for 50% of the cases of blindness, especially in Asian, African, and South American countries. However, reports from western countries indicate that AMD and glaucoma are the main causes of blindness in these countries.…”

Section: Introductionmentioning

confidence: 99%

Visual impairment in the 40- to 64-year-old population of Shahroud, Iran

Hashemi

Khabazkhoob

Emamian

et al. 2012

Eye

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Purpose To determine the prevalence of visual impairment by age and gender in Shahroud. Methods Using random cluster sampling, 6311 Shahroud inhabitants who were between 40 and 64 years old were invited for ophthalmological examinations. Visual acuity worse than 0.5 LogMAR (20/60) and 1.3 LogMAR (20/ 400) in the better eye was regarded as low vision and blindness, respectively. The cause of blindness was determined by an ophthalmologist and in a person with more than one cause, the most correctable cause was regarded as the main cause. Results This study was conducted on 5190 participants (response rate: 82.2%). On the basis of presenting visual acuity, the prevalence of low vision and blindness was found to be 1.8% (95% confidence interval (CI): 1.4-2.10) and 0.5% (95% CI: 0.3-0.7), respectively. Based on corrected vision, these values were 0.5% (95% CI: 0.3-0.7) and 0.3% (95% CI: 0.1-0.4), respectively. Visual impairment increased with age in women (Po0.001). Uncorrected refractive errors (63.9%), cataract (20.2%), and amblyopia (5.9%) were the most common causes of visual impairment based on presenting vision. Based on corrected vision, however, cataract (42.5%), amblyopia (12.5%), and retinitis pigmentosa (7.5%) were the most common causes of visual impairment. Conclusion Although the prevalence of visual impairment in the city of Shahroud was determined to be lower than two previous studies in the country, correction of refractive errors and cataract could minimize the rate of visual impairment in this population as they were shown to comprise 85% of the causes of visual impairment. The elderly women need to receive more attention.

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Section: Introductionmentioning

confidence: 99%

Visual impairment in the 40- to 64-year-old population of Shahroud, Iran

Hashemi

Khabazkhoob

Emamian

et al. 2012

Eye

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“…541 Male, examined 1962Male, examined , 1963Male, examined and 1995 3 In retinal detachment cases, there is an established overrepresentation of myopes. 4 Thus, the customary estimates of the overmorbidity of the highly myopic subject are usually founded on selected cross-sectional clinical data and compared with poorly defined background populations.…”

Section: Right Eye Left Eyementioning

confidence: 99%

“…With the population's known low prevalence of sight-threatening eye diseases during working-age, 17 however, instead we refer to population figures of significant eye disease for our country as reflected by the epidemiologic broad-scale evaluation mentioned in the introduction 3 and to other reports on visual impairment. 6,17,18 …”

Section: Risk Of Achieving Visual Impairment Associated With High Myopiamentioning

confidence: 99%

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2010

Acta Ophthalmologica

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“…[1][2][3][4][5] The prevalence of nAMD was predicted to continue increasing over the next decade, from 415 000 cases in 2010 to 516 000 in 2020 in the UK, 6 and from 1 million in 2010 to over 2 million in 2050 in the USA. 7 A temporal and causative relationship has been noted between the widespread introduction of anti-VEGF drugs and a decrease in blindness registration caused by nAMD.…”

Section: Introductionmentioning

confidence: 99%

Prevalence and incidence of blindness and other degrees of sight impairment in patients treated for neovascular age-related macular degeneration in a well-defined region of the United Kingdom

Buckle

Lee

Mohamed

et al. 2015

Eye

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Aims This study aimed to evaluate the incidence and prevalence of blindness, sight impairment, and other visual acuity (VA) states in patients receiving ranibizumab for neovascular age-related macular degeneration (nAMD) in Gloucestershire. Methods Serial VA and injection data for all treatment-naive patients receiving their first intravitreal injections of ranibizumab for nAMD in the Gloucestershire National Health Service Ophthalmology department between 2008 and 2010 were extracted from an electronic medical record system. Results The prevalence of blindness (VA in the better-seeing eye r25 Early Treatment Diabetic Retinopathy Study (ETDRS) letters) at the time of first intravitreal injection was 0.8%, increasing to 3.5% after 3 years. The prevalence of sight impairment (VA in the better-seeing eye 26-39 ETDRS letters) increased from 4.1% at baseline to 5.5% after 3 years. The incidence of initiating ranibizumab treatment for nAMD in people aged Z50 years in Gloucestershire was 111 people per 100 000 population in 2009, and 97 people in 2010. The incidence of patients meeting the visual criteria for blindness and sight impairment registration from treated nAMD in people aged Z50 years in Gloucestershire was 3.5 and 9.7 people, respectively per 100 000 population in 2010. Conclusion This is the first real-world study on the incidence and prevalence of eligibility for blindness and sight impairment registration in treated nAMD in the UK based on VA data. The incidence and prevalence of eligibility for certification of blindness or sight impairment in patients treated with ranibizumab for nAMD is low in Gloucestershire, with only 3.6% of the incident population progressing to blindness in 2010.

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Prevalence and causes of visual impairment and blindness among 9980 Scandinavian adults

Cited by 325 publications

References 40 publications

Visual impairment in the 40- to 64-year-old population of Shahroud, Iran

Visual impairment in the 40- to 64-year-old population of Shahroud, Iran

Untitled

Prevalence and incidence of blindness and other degrees of sight impairment in patients treated for neovascular age-related macular degeneration in a well-defined region of the United Kingdom

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