Tex. Occ. Code § 353.159
A contact lens prescription may not contain, and a physician, optometrist, or therapeutic optometrist may not require a patient to sign, a form or notice that waives or disclaims the liability of the physician, optometrist, or therapeutic optometrist for the accuracy of:
Acts 1999, 76th Leg., ch. 388, Sec. 1, eff. Sept. 1, 1999.