Table 4.

Models of systematic DR screening in India

State/District [Reference]	Modality	Population Covered	Screening lead	Grading Lead
Kerala (Thiruvanthapuram)[25]	Nonmydriatic Imaging - NCDa Clinics	16 PHCsb	PMOA/OOc	Ophthalmologist
Goa State[26]	Nonmydriatic Imaging; Comprehensive care of diabetes and all complications - NCD Clinics	188,640 (all PHCs)	PMOA/OO	Ophthalmologist
Tamil Nadu; Tirunelveli[27]	Nonmydriatic imaging - NCD Clinics	753,254 18 CHCd/PHC	NCD Clinic Nurse	Ophthalmologist
Maharashtra; Wardha[28]	Nonmydriatic imaging- Static NCD Clinics and Mobile Van	1,016,918 6 CHC; DHe; 22 PHC	PMOA/OO/NCD Clinic Nurses	Ophthalmologist
Delhi; Slum dwellers[15]	Nonmydriatic imaging at Vision Centres	11516 known diabetic; Camps in schools/Vision Centres	Optometrist	Optometrist
Karnataka; Tumkur[29]	Nonmydriatic imaging at CHC	1,249,169; known diabetics registered at NCD clinics supported by mobile van	PMOA/OO	Ophthalmologist

^a NCD: Noncommunicable Disease; ^b PHC: Primary Health Centre; ^c PMOA/OO: Para Medical Ophthalmic Assistant/Ophthalmic Officer; ^d CHC: Community Health Centre; ^e District Hospital