Ans. is 'c' i.e., Trachoma o SAFE strategy developed by the WHO is the key to the treatment of trachoma. This consists of Surgery (S) on the lids. Antibiotics to treat the community pool of infection (A), Facial cleanliness (F) ; and Environmental changes (E). Blindness From Trachoma Can Be Stopped At FourDifferent points: SAFES - Surgical correction for trichiasis. It is a simple operation that can turn out lashes which are scratching the cornea, patients can be operated on in a local dispensary or health center, or other community space if properly prepared.The surgical procedure can be performed by those who have had surgical training : eye doctors, eye nurses or eye care assistants.A - Antibiotic treatment of people with active trachoma infection.Regular detection and treatment of people with active trachoma is important. The recommended treatment is as follows:o Wash the face and clean the eyeso Apply tetracycline 1% ointment to both eyes two times daily for six weekso The ointment is sticky and may blur the vision for a few moments. This will only last a few moments. If possible, treat all the children in the family.F - Clean FacesFamilies and individuals can do something to protect themselves from infection by increasing the number of times a child washes his/her face. Regular face washing removes discharge so that flies are not attracted to faces. It does not require great quantities of water : one liter of water can wash up to 30 faces.E - Environmental Improvemento This question is a repeat from NEET 2012-13, All India & AIIMS.