Optometry (Greek: optos meaning seen or visible and metria meaning measurement) is a health care profession concerned with eyes and related structures, vision, visual system and vision information processing in humans.
Like most health professions, optometry education, certification and practice is regulated in most countries. Optometrists and related organizations interact with government, other health care professions and the community to deliver eyecare and visioncare. Optometry is a type of eyecare profession and optometrists, indeed, often interact with other eye care professionals, such as ophthalmologists (medical doctors) and opticians.