ABO Optician Exam 2026: How It Works and How to Pass

Here is exactly how the ABO optician exam works, and how to pass it. Search for the passing score and you will find a confident percentage repeated across a dozen prep sites. The American Board of Opticianry does not publish that number anywhere. What it publishes instead is more useful to you than a percentage would be.

The credential comes from the American Board of Opticianry. Its entry-level test covers spectacles, and the board calls it the National Opticianry Competency Examination. A sister exam from the National Contact Lens Examiners covers contact lenses instead. Pass the spectacle exam and you are a nationally certified optician.

You take it on a computer, either at one of more than 300 Prometric test centers or by remote proctor. Testing runs year round across four windows. If you intend to test remotely, verify with your state licensing board first, because not every state accepts a remotely proctored exam for licensing purposes. The format is fixed: 125 multiple-choice questions, and two hours to answer them.

Here is the first thing almost nobody tells you. 125 questions are asked, but only about 100 are scored. The rest are pilot items the board is trying out for future exams, and nothing marks them. Treat every question as if it counts, because you cannot tell which ones do not.

Now the passing score. The candidate handbook explains in careful detail how the passing score is set, and then never prints the number. That is deliberate. It is not a gap in your research, so stop hunting for a percentage.

The exam is criterion-referenced, so your result is never compared with other candidates. You are measured against a fixed standard of safe, competent practice. A panel of certified opticians working with a measurement expert sets the minimum passing score using the modified Angoff method, and that standard can move when the exam is rebuilt, roughly every three years. Read the current handbook the week you register.

Eligibility is unusually simple. You need a high school diploma, a GED, or the equivalent. No experience is required and no training program is required, and exceptions may apply for high school students enrolled in dual programs. There is one catch, and it is a large one.

Where your state's licensing board sets requirements that differ from the board's own, the state requirement supersedes them. National certification is a voluntary credential that demonstrates competence; the authority to practice is granted by a state. Only some states license opticians at all, and those that do recognize their own credentials. Passing this exam does not by itself let you work everywhere.

What is actually tested breaks into six areas, and the board publishes them as counts of scored questions rather than as percentages, which is more useful because you can count them directly. Three of the six carry 65 of the 100 scored questions: ophthalmic optics, ophthalmic products, and dispensing procedures. Optics alone is 25 questions, a quarter of your score, and it is the area candidates most often underprepare, because it is the part that looks like physics homework. Laws, regulations and standards is only 10 questions, and it is the cheapest block of points on the exam, because the rules are finite and you can simply learn them.

Optics and the prescription math are where this exam is won or lost, and the legal area is where it is quietly thrown away. Two real questions. The first is transposition, the most reliably tested skill on this exam. A prescription reads, in plus-cylinder form, plus 1.50, plus 2.25, axis 65.

Written in minus-cylinder form, what is that same lens? It is plus 3.75, minus 2.25, axis one fifty-five. Flat transposition is three steps, always in that order. Add sphere and cylinder algebraically, so plus 1.50 and plus 2.25 give plus 3.75.

Reverse the sign of the cylinder. Then rotate the axis 90 degrees, so 65 becomes one fifty-five. The second comes from the legal area. A patient insists on a lens material that is not impact resistant, and offers to sign a waiver releasing your optical from responsibility.

Under the federal impact-resistance regulation, who may authorize dispensing lenses that are not impact resistant? Not the patient. It is the prescribing physician or optometrist, by written direction. The regulation places the exemption entirely with the prescriber, and requires three things together: a professional finding that impact-resistant lenses will not meet that patient's visual needs, a written direction for the other lenses, and written notice to the patient.

A signature at the counter documents a refusal; it does not transfer the duty. Four things to do before you sit it. First, drill practice questions until the rules are automatic, and well past whatever you imagine passing to be — since the board names no number, aim comfortably clear of one. Second, master the notation: plus-cylinder and minus-cylinder form, base curve, add power, prism base direction.

Much of this exam is a vocabulary test wearing a lab coat. Third, keep a list of every question you miss, sort it by content area, and spend your time where the questions actually are. Fourth, manage the clock. Two hours for 125 questions is under a minute each.

There is no penalty for guessing, so never leave one blank, and use the mark-and-review tool instead of stalling on a hard item. Two practical rules before you book. Your result is reported the moment you finish, and if you do not pass, the score report breaks your performance down by content area, which tells you what to rebuild. You wait 14 days to retest and you have three attempts; after a third unsuccessful one you wait 90 days.

Certification is not permanent either — you renew every three years with continuing education. So: 125 questions, two hours, about 100 of them scored. No published passing score, because the standard is set by a panel rather than fixed at a percentage. Six content areas, with optics, products and dispensing carrying nearly two-thirds of the points.

And national certification is not a license — your state decides that part. You can practice all six areas free, in English, Chinese or Spanish, with every answer explained, at quibank.com/en/optician. No sign-up needed.