Which action is NOT permitted by a seller of contact lenses?

The action that is not permitted by a seller of contact lenses is changing the prescription details without confirmation. This is significant because in California, as well as under federal law, sellers of contact lenses are required to adhere strictly to the details set forth in the prescription provided by a licensed eye care professional. Altering a prescription without the consent and confirmation from the prescribing optometrist or ophthalmologist undermines patient safety and could lead to incorrect lens fitting, which can result in complications for the patient.

In contrast, requesting verification of a prescription is a standard procedure to ensure that the lenses sold are appropriate for the patient, and delivering lenses with a valid prescription is a fundamental aspect of legal selling practices. Additionally, providing prompts for consultation between the patient and their eye care provider is encouraged to ensure patient understanding and promotes safety in contact lens usage. All of these actions support the integrity of the prescription process and prioritize patient health.