In many low- and middle-income countries. there are inadequate refractive error services for the many people who are currently either blind or visually impaired because they lack a pair of spectacles. The prioritisation of refractive error and low vision services within VISION 2020: The Right to Sight has provided an impetus and framework for the development of refractive error progra... https://allfixelectricales.shop/product-category/phone-socket/