In the context of contact lens prescriptions, what does "Plano" mean?

In the context of contact lens prescriptions, "Plano" refers to a prescription that has no corrective power. This means that the lens does not provide any vision correction; it is essentially neutral. Plano lenses are often used for cosmetic purposes, such as to change the eye color, or for people who may not need vision correction but want to wear lenses for aesthetic reasons.

The other options pertain to different aspects of contact lenses. Some lenses may be associated with specific brands or materials, but a "Plano" designation is specifically about the lens’s prescription power rather than brand or material. Understanding the specific meaning of "Plano" helps correctly interpret a contact lens prescription and can aid in properly fitting patients with the appropriate lens type when no correction is needed.