There are three levels of AOP:
- Ophthalmic Assistant (OA): the entry level AOP
- Ophthalmic Technician (OT): the intermediate level AOP
- Ophthalmic Medical Technologist (OMT): the advanced level AOP
Ophthalmic assistants perform the most basic of ophthalmic tasks, such as measuring vision, some basic intraocular pressure measurements, and may received some extra training by their employer to run some additional testing.
An ophthalmic technician will receive a foundation in a wide range of ophthalmic diagnostic techniques, ranging from more advanced intraocular pressure measurement, to different examination skills (eg corneal assessment, visual field testing, biometry, ocular motility, etc). A technologist is equipped with the skills needed to immediately integrate into whatever diagnostic role an eye clinic might require.
The ophthalmic technologist builds on the skills of a technician, learning more advanced techniques and skills, and begins to hone their critical thinking skills in the context of the ophthalmic practice. A more fundamental knowledge is developed, leading to a greater understanding of which tests are indicated, and why, for a given condition, and greater skills of diagnosis are honed.