This site keeps you focused on what actually shows up on the American Board of Opticianry exam: lens formulas, optical vocabulary, and common calculation problems.
Note: This is an independent resource. It is not affiliated with or endorsed by the American Board of Opticianry.
Use the three main parts of the site together: questions, calculators, and the glossary reinforce the same core ideas from different angles.
Work through multiple-choice questions that mirror the ABO format. After you answer, you’ll see which option is correct and why.
Use lightweight calculators to check your work on common ABO-style problems without getting lost in your own arithmetic.
When a question uses a term that feels fuzzy, jump into the glossary for a short, exam-focused definition.
The questions page behaves like a mini exam simulator: one question at a time, four choices, and a clear solution after you submit your answer.
Use the calculators page as a sidekick while you practice or when you want to check your own handwritten work.