- (n.) "The employment of any means, other than the use of drugs, for the measurement of the powers of vision and adaptation of lenses for the aid thereof.".
- (n.) "The employment of subjective and objective mechanical means to determine the accomodative and refractive states of the eye and the scope of its function in general.".
- (n.) As defined (with minor variations) in the statutes of various States of the United States:.
- (n.) Measurement of the range of vision, especially by means of the optometer.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). optometry. Retrieved September 23, 2026, from http://smartdefine.org/optometry/definitions/2039191 |
| Chicago | Webster's. 2011. "optometry" http://smartdefine.org/optometry/definitions/2039191 (accessed September 23, 2026). |
| Harvard | Webster's 2011, optometry, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/optometry/definitions/2039191>. |
| MLA | Webster's. "optometry" 27 May 2011. Web. 23 September 2026. <http://smartdefine.org/optometry/definitions/2039191> |