1. Convention on the Rights of Persons with Disabilities,2006
2. Web Content Accessibility Guidelines (WCAG) 2.0
3. Guidelines on Accessibility of Telecommunication/ICT Products and Services;International Telecommunication Union Telecommunication Standardization Sector (ITU-T), ITU-T Recommendation E.175,2019
4. World Report on Vision,2021
5. Types of Color Blindness,2023