There are a wide role of optometrist in public health: - Providing screening and vision care services at secondary and tertiary levels. - Detection and management of potentially blinding diseases such as cataract, diabetes and glaucoma. - Preventing conditions like trachoma, red eye, diabetic retinopathy, and myopia progression. - Protecting the eye from injuries, UV radiation, and smoke exposure. - Promoting eye health literacy, community screening, school vision screening, and eye health promotion.