Answer:

2 Ophthalmologists diagnose, treat and prevent disorders of the eyes and visual system

3 Ophthalmologists and optometrists are both involved with the examination of healthy eyes and the diagnosis and treatment of eye diseases. Opticians are trained in filling prescriptions for eyeglasses and determine the proper eyeglass frames and adjust frames for proper fit.

4 They provide information, education and motivation services for primary health care, maternal and child health, child rights, family planning and nutrition.