Also, lens measurements such as power, diameter and base curve are included. More detailed prescriptions will include directions for safe use such as wearing schedule, whether lenses are for daily or extended wear, the number of refills, whether lens material substitutions are allowed and an expiration date. Some Internet sites ask for information about your doctor so that they may check the prescription with your doctor. If they do check with your doctor and receive a verbal okay, they comply with the Federal prescription device regulation. If the company does not check, then they have not obtained a valid prescription.
Some state laws require that a written prescription be presented.
This is a violation of the Federal prescription device regulation. Often, the company will say that they will check back with your doctor to confirm the prescription. However, that may not always happen. Some Internet sites will allow you to fill out a chart with the ordering information about your contact lenses and ask you to fill in your doctor s name and phone number. The site may not ask for an actual copy of your prescription.