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ABO American Board of Opticianry VIP Certification Exam
ABO — The ABO certification exam is administered by the American Board of Opticianry (ABO), a nationally recognized credentialing body for opticians; the exam consists of 125 multiple-choice questions administered over 150 minutes, with a passing scaled score of 500 on a 200–800 scale, covering ophthalmic optics, lens materials, frame fitting, measurements, and troubleshooting.
31
Questions
150m
Time Limit
70.00%
To Pass
Question 1 of 31👑 VIP
A patient presents with the following prescription written in minus-cylinder form: OD +2.25 -1.50 × 075. You need to transpose this to plus-cylinder form before ordering from a laboratory that requires it. What is the correct plus-cylinder transposition?
Questions 2–31 and full explanations are VIP-exclusive.