Epidemiology Research International / 2014 / Article / Tab 1

Research Article

Blindness Registers as Epidemiological Tools for Public Health Planning: A Case Study in Belize

Table 1

WHO levels of visual impairment.

CategoryWorse than Equal to or better than

Mild or no visual impairment6/18
3/10 (0.3)
20/70

Moderate visual impairment6/186/60
3/10 (0.3)1/10 (0.1)
20/7020/200

Severe visual impairment6/603/60
1/10 (0.1)1/20 (0.05)
20/20020/400

Blindness3/60No light perception
1/20 (0.05)
20/400

Categories of visual impairment were defined according to the World Health Organization (WHO) International Classification of Diseases (ICD-10) based on presenting distance visual acuity in the better eye.

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