Tex. Occupations Code § 351.355: DETERMINING OR MEASURING VISION.

In determining or measuring the powers of vision of the human eye, an optometrist or therapeutic optometrist may:

(1) examine the eye to diagnose the presence of a defect or abnormal condition, the presence or effect of which may be corrected, remedied, or relieved by the use of lenses or prisms;

(2) determine the accommodative or refractive condition or the range or powers of vision or muscular equilibrium of the eye; or

(3) examine the human vision system to determine a departure from the normal, measure the system's powers of vision, or adapt lenses or prisms for the system's aid or relief.

Acts 1999, 76th Leg., ch. 388, Sec. 1, eff. Sept. 1, 1999.