Optometric Technology at Free-Ed.Net prepares individuals to assist optometrists in providing patient care, administering examinations and treatments, and performing office administrative functions. Includes instruction in applied anatomy and physiology of the eye, visual testing, patient communication, patient preparation, medications and administration, dispensing and fitting of eyeglasses and contact lenses, record-keeping, and office management skills.

Optometry A Wikipedia article.

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Optometric Technology
A career advisory

Optometric technology is one of a relatively few technology occupations one can enter with no more than a high-school diploma or GED.  This is not to suggest that it is the best way to enter the profession, however.  An associate's degree in any technical area and board certification is the ideal way to enter the profession. But .. hey. Start working for an optometrist out of high school, get some on-the-job experience and do the additional education in the evenings.