The Texas Optometric Association has been an essential advocate for Texas optometrists. Today, optometry plays a vital role in Texas's health care system. Below is a timeline demonstrating how far optometry has come since the formation of the Texas Optometric Association in 1900.
| Date | Milestone |
| 1900 | TOA established |
| 1901 | First optometry law in the country passed |
| 1903 | First TOA Constitution and By-Laws adopted—W.C. McCahan elected first president |
| 1919 | A prominent Texas optometrist was charged with ‘practicing medicine’ for fitting a pair of glasses, giving renewed emphasis to the need for a Texas optometry act |
| 1921 | Governor Pat Neff signed first Texas Optometry Act |
| 1923 | Mollie Armstrong elected first woman president of TOA; she was the second woman optometrist to practice in the country. |
| 1934 | TOA Convention first offered continuing education—a complete examining room was set up on stage to demonstrate the in-depth 21 point vision analysis |
| 1936 | First ‘Save Your Vision Week’ proclaimed by Gov. James V. Allred |
| 1943 | First TOA monthly journal, “The Bulletin” was published |
| 1952 | College of Optometry opened at University of Houston; TOA pledges $100K |
| 1963 | UHCO became a state-supported school |
| 1969 | Texas Optometry law significantly revised and modernized with TOA support |
| 1981 | Optometry Act reviewed under Sunset for the first time, resulting, at TOA’s urging, in passage of the optometry “Bill of Rights” which contained provisions designed to prevent optical companies from influencing the professional judgment of optometrists. |
| 1981 | “Clayton Compromise” passed as an amendment to the Medical Practices Act allowing optometrists to use diagnostic eyedrops under a standing delegation order from a physician. This was made possible when Speaker Bill Clayton refused to pass the Sunset bill for medicine until a provision for optometry was added during a special session. |
| 1987 | AOA and TOA successfully lobbied Congress to include optometrists as physicians in Medicare. |
| 1989 | TOA successfully lobbied to have optometrists included in Medicaid. |
| 1991 | Optometrists won the right to independently administer all diagnostic eyedrops and most topical eyedrops, including topical steroids. |
| 1993 | TOA successfully defended attacks on the optometry law during the Sunset process. |
| 1997 | Texas Contact Lens Act passed, striking a balance between patient’s rights to contact lens prescriptions and doctor’s concerns for public safety. |
| 1999 | At TOA urging, the legislature passed a bill allowing optometrists to prescribe oral medications and treat glaucoma. |
| 2001 | Optometry law amended to unite the profession by eliminating reference to two different optometry associations. |
| 2001 | With TOA support, a bill was passed to allow optometrists and physicians to practice in partnerships. |
| 2001 | TOA successfully fended off attacks from 1-800CONTACTS to weaken the Texas Contact Lens law. |
| 2003 | TOA passed ‘Eyecare Savings Bill’ which required insurance medical panels to accept optometrists who are on that company’s vision panels. |
| 2007 | TOA passed Medicaid "Direct Access" bill, allowing Medicaid patients to see optometrists without referrals from primary care physicians. |