Should an optometrist be addressed as Dr? What should I call an optometrist?

Should an optometrist be addressed as Dr? What should I call an optometrist?

The rule is either ‘Dr.‘ before, or the post-nominal abbreviation for their degree after. Never both at the same time.

—-Envelope or address block on an email:
——–(Full Name), OD
—-—-(Name of practice or clinic)
—-—-(Address)

—-Envelope, social:
——–Dr. (Full Name)
—-—-(Address)

————Note: it is never Dr. (Full Name), OD

—-Letter salutation:
—-—-Dear Dr. (Surname):