King Salman Humanitarian Aid and Relief Center (KSrelief) has launched the second voluntary medical campaign to combat blindness and the diseases that cause it in Kano city in the Federal Republic of Nigeria, running from 18 to 25 May 2022. This campaign is an extension of the projects related to combating blindness implemented by the Kingdom of Saudi Arabia, represented by KSrelief for families with limited incomes in a number of fraternal and friendly countries around the world.