optometrist doctor examines eyesight of child boy with phoropter

astigmatism boy care child clinic cornea correction desease diagnosis diagnostic doctor examination eye eyeglasses eyesight farsighted glasses glaucoma health iris lens longsighted looking medical medicine myopia oculist ophthalmic ophthalmologist ophthalmology optic optical optician optometrist optometry patient phoropter physician pupil retina see sight specs spectacles treatment vision visual