Purpose: To measure sensitivity and specificity of vision screeners in identifying children with visual impairment and positive signs and symptoms and assess association of effectiveness with individual characteristics of screeners and type of schools screened. Methods: A total of 1096 children from age 5 to 15 years of age were screened. A total of 396 children were screened from a m... https://cosmeticssquadets.shop/product-category/nicotine-gum/