The prevalence of low vision and blindness in Canada

Maberley, David; Hollands, Hussein; Chuo, Jean Y.; Tam, G; Konkal, J; Roesch, M; Veselinović, Aleksandar M.; Witzigmann, M; Bassett, Ken

doi:10.1038/sj.eye.6701879

Cited by 164 publications

(94 citation statements)

References 6 publications

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“…Table 5 also compares raw prevalence rates to published rates found by us in a representative Canadian city. 10 The raw rate of visual disability based on BCVA in the VDES population was 9.2 times higher than the Canadian rate.…”

Section: Eyementioning

confidence: 99%

The prevalence of low vision and blindness in a Canadian inner city

Maberley

Hollands

Chang

et al. 2006

Eye

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Section: Eyementioning

confidence: 99%

The prevalence of low vision and blindness in a Canadian inner city

Maberley

Hollands

Chang

et al. 2006

Eye

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“…Low vision rates vary between 0.23% and 3.5% according to the level of development in different countries [10][11][12][13][14][15]. The rate of low-vision patients gradually increases with an increasing elderly population and will therefore continue to be a growing problem for ophthalmologists in the future [16].…”

Section: Discussionmentioning

confidence: 99%

The Effect of Initial Visual Acuity on Visual Prognosis in Low Vision Aid and Rehabilitation Cases

Altınbay¹,

Mehmet²

2018

Int J Ophthalmol Clin Res

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Purpose: To analyze the initial visual acuities of cases referred to our clinic due to low vision and the effect on visual prognosis. Materials and methods:A retrospective evaluation was carried out on 869 eyes of 464 patients who were referred to our center due to low vision between December 2010 and May 2015. Distance acuities of the patients were measured with a distant vision chart prepared for patients with low vision, and the near acuities were measured with a Jaeger near vision chart. Patients with logMAR ≥ 0.5 [snellen ≤ 20/63] visual acuity were included in the study. Cases were separated into 4 groups according to initial distant acuity and 3 groups according to the initial near acuity values. In the statistical analysis, a value of p < 0.05 was accepted as statistically significant. Results:The mean distant acuity of the cases was found to be 0.13 ± 0.11 (Snellen) (mean logMAR 0.9) and 0.55 ± 0.29 (Snellen) (mean logMAR 0.3) respectively before and after the low vision aid (LVA) examination. The mean near acuity of the cases was J 13.93 ± 4.21 (mean logMAR 0.8) and J 7.76 ± 4.51 (mean logMAR 0.4) respectively before and after the LVA. Initial distant visual acuity was logMAR > 1. Conclusion:The visual acuity at the time of application is the primary factor affecting LVA success. In this study, the visual acuity of the cases referred to our center for LVA was evaluated as quite low, sufficient time could not be allocated to cases due to intense polyclinic conditions and patients were referred late. With earlier referral, it would be possible to enable patients to remain more self-sufficient.

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“…Reported predisposing factors for scleritis due to Nocardia are trauma, cataract surgery, exposed scleral buckle, and contact lens wear. [2][3][4][5][6] We are unaware of a previous report on Nocardia nova infection in the Eye.…”

mentioning

confidence: 99%

“…Third, contrary to Dr Muula's comments, all of the ophthalmic diagnoses in our prior study of a mediumsized Canadian city (Prince George) were also made by a single ophthalmologist. 2 This latter study was a chart review and, as such, the patients' ophthalmologists were occasionally consulted if there was diagnostic uncertainty for the physician performing the data abstraction.…”

mentioning

confidence: 99%