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Mar 3, 2013 · Blindness. 1) Blindness is defined as visual acuity less than 3/60 or inability to count fingers at 3 meters. It affects 180 million people worldwide, of whom 45 million are blind. 2) Cataract (19 million), glaucoma (6.4 million), and trachoma (5.6 million) are the leading causes of blindness globally.
- 12. blindness | PPT - SlideShare
1) Blindness can be defined and categorized in different...
- 12. blindness | PPT - SlideShare
Oct 29, 2020 · 1) Blindness can be defined and categorized in different ways such as total blindness, functional blindness, and legal blindness which refers to central visual acuity of 20/200 or less. 2) The leading causes of blindness worldwide are cataracts, glaucoma, trachoma, and childhood blindness.
Jul 2, 2020 · This document discusses blindness, its definitions, types, causes, prevention and management. It defines blindness as visual acuity of less than 3/60 in the better eye. The two main types are partial and complete blindness. The leading causes globally are cataract, trachoma, leprosy and vitamin A deficiency.
Dec 20, 2019 · A presentation on the national programme for control of blindness in India, its objectives, strategies, activities, organization and infrastructure. It covers the causes, prevalence and prevention of blindness, as well as the role of WHO and NGOs.
Symptoms: blurred vision, narrowed field of sight, light sensitivity, total blindness; Vision loss is gradual
1. Blindness is defined as visual acuity less than 3/60 and affects 180 million people worldwide, with 80% of cases being avoidable. 2. In India, the major causes of blindness are cataract (62.6%), uncorrected refractive error (19.7%), and glaucoma (5.8%).
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Jan 5, 2020 · A presentation by Nakhleh E. Abu-Yaghi, M.B.B.S, on the causes, types, and effects of visual impairment and blindness. Learn about the legal definitions, prevalence, prevention, and management of vision problems, as well as the protocol and adaptations for interacting with visually impaired people.
