By interview stage, a school has seen your grades, your Optometry Admission Test (OAT) and, at Waterloo, your Casper results. The interview measures what those can't: your knowledge of optometry, your motivation, how clearly you think, and how you'd talk to patients.
Most US optometry schools use a conversational panel or one-on-one interview, often with your file open. Some use a Multiple Mini Interview (MMI). Waterloo holds a virtual interview weekend, and Université de Montréal a French "entrevue de motivation." The skills are the same in every format, which is why this guide is organised around question types.
Waterloo says its interview assesses "knowledge of the profession, motivation toward a career in optometry, ability to think clearly and logically, poise, self-confidence." That's a good summary of what every optometry interview is looking for.
Optometry also raises questions other professions don't: working in retail and business settings without letting sales override care, the boundary with ophthalmology, and a fast-changing scope of practice. Expect interviewers to probe all three.