The Optometrist’s Work
The word “optometry” is made up of two Greek words: optos, visible and metron, a measure, meaning the measurement of the visual powers. Examination for detection of visual deficiencies includes tests by the use of charts and of certain precise measuring instruments. For example: One instrument permits inspection of the interior of the eye; another, measurement of the curvature of the cornea; still another, the field of vision. With the data obtained by the intelligent use of all these instruments the optometrist can determine the nature of the lenses required to correct any refractive errors found.
Formerly glasses were given merely as an aid to vision, now they are prescribed for the relief of strain and its resultant symptoms, such as headache, etc. They are also supplied for efficiency and protection purposes to factory employees, for some workmen without glasses will exhibit as much eye fatigue in 5 hours as others will in 10; and employers are now recognizing this to their own advantage.
Thus the field of usefulness and profit for optometrists is ever enlarging.