22 Tex. Admin. Code § 271.11
In order to demonstrate compliance in regard to therapeutic optometry, successful completion of at least 90 classroom hours of postgraduate course work and clinical training in general and ocular pharmacology and related pathology conducted by an accredited institution which has facilities for both didactic and clinical instruction, or via other educational programs approved by the Board, is required. Of the required 90 classroom hours, a minimum of 20 hours must be obtained in applied clinical skills. The applicant must provide documentation of successful completion of course work from the institution. Optometrists graduated after January 1, 1991, shall be considered as having met the educational requirements for a therapeutic license.
22 Tex. Admin. Code § 271.11