<prompt> Under NPCB, screening of school children is firstdone bySchool teachersVillage health guideOphthalmologic assistantMedical officer  <response>: School teachers Under the National Programme for Control of Blindness, all children aged 10-14 years will be screened for refractive errors by trained teachers. Children who cannot read the 69 line with any eye are then sent to the ophthalmic assistant of the CHC for refraction test. Children needing spectacles are then provided free spectacles by opticians who have been contracted by the NPCB. 