An assistant in the office of a physician and surgeon or optometrist acting under the direct responsibility and supervision of the physician and surgeon or optometrist may fit prescription lenses. Under the direct responsibility and supervision of the ophthalmologist or optometrist, an assistant in the office of an ophthalmologist or optometrist may also do the following:

1. Prepare patients for examination.
2. Collect preliminary patient data, including taking a patient history.
3. Perform simple noninvasive testing of visual acuity, pupils, and ocular motility.
4. Perform automated visual field testing.
5. Perform ophthalmic photography and digital imaging.
6. Perform tonometry
7. Perform lensometry.
8. Perform nonsubjective auto refraction in connection with subjective refraction procedures performed by an ophthalmologist or optometrist.
9. Administer cycloplegiacs, mydriatics, and topical anesthetics that are not controlled substances, for ophthalmic purposes.
10. Perform pachymetry, keratometry, A scans, B scans, and electrodiagnostic testing.