Optometry is a health care profession that involves examining the eyes and applicable visual systems for defects or abnormalities as well as prescribing the correction of refractive error with glasses or contact lenses and the treatment of eye diseases.
Traditionally, the field of optometry began with the primary focus of correcting refractive error through the use of spectacles. Modern-day optometry, however, has evolved through time so that the educational curriculum additionally includes significant training in the diagnosis and management of ocular disease, in most of the countries of the world, where the profession is established and regulated.