Mass. Gen. Laws » Part I Title XVI Chapter 112
Massachusetts General Laws

Mass. Gen. Laws ch. 112, § 66 (2026)

Practice of optometry; definition

✓ text as last checked Sept. 2026 (this copy records no edition or section history)
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Section 66. As used in this chapter, ''practice of optometry'' shall mean the diagnosis, prevention, correction, management or treatment of optical deficiencies, optical deformities, visual anomalies, muscular anomalies, ocular diseases and ocular abnormalities of the human eye and adjacent tissue, including removal of superficial foreign bodies and misaligned eyelashes, by utilization of pharmaceutical agents, by the prescription, adaptation and application of ophthalmic lenses, devices containing lenses, prisms, contact lenses, orthoptics, vision therapy, prosthetic devices and other optical aids and the utilization of corrective procedures to preserve, restore or improve vision, consistent with sections 66A, 66B and 66C.

Notes of Decisions
Cited in 3 cases, 1929–2020 · leading case: Commonwealth v. S. S. Kresge Co., 166 N.E. 558 (Mass. 1929).
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Commonwealth v. S. S. Kresge Co., 166 N.E. 558 (Mass. 1929). · cites it 2× “” The practice of optometry is defined by G. L. c. 112, § 66, to be “the employment of any method or means other than the use of drugs for the measurement of the powers of vision and the adaptation of lenses for the aid thereof.”
Kelley v. Bd. of Reg. in Optometry, 218 N.E.2d 130 (Mass. 1966). “” On June 9,1965, in answer to a request from the defendant Board of Registration in Optometry (the board), the Attorney General rendered an opinion that (1) the fitting of contact lenses to the human eye constituted the practice of optometry as defined by G. L. c. 112, § 66,…”
Commonwealth v. Stirlacci, 483 Mass. 775 (2020). “ician, dentist, veterinarian, podiatrist, scientific investigator, or other person registered to distribute, dispense, conduct research with respect to, or use in teaching or chemical analysis, a controlled substance in the course of professional practice or research in the…”
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