- The next ACMO administration is June 4, 2027, delivered at Pearson VUE test centers.
- Registration opens August 4, 2026 and closes May 21, 2027; late registration runs May 22-28, 2027 with a $400 add-on fee.
- Standard fees effective for exams beginning August 2026 are $670 for residents and $1,100 for other candidates.
- The exam is 40 simulated patient cases (160 questions total) over 4 hours 30 minutes, weighted toward Ocular disease (65-75%).
2026-2027 Testing Window
Advanced Competence in Medical Optometry (ACMO) is administered by the National Board of Examiners in Optometry (NBEO) as one exam within the broader American Board of Certification in Medical Optometry (ABCMO) certification process. Note the official naming convention: it is Advanced Competence, not "Competency" - a small detail that matters if you're cross-referencing NBEO documentation or filling out your ABCMO application later.
For the 2026-2027 cycle, there is a single scheduled administration: June 4, 2027. The exam is delivered exclusively through Pearson VUE test centers, meaning you'll book a seat the same way you would for many other computer-based licensing exams, subject to seat availability in your region.
If you're still mapping out whether this exam fits your career path, it's worth reading What Is ACMO? and ACMO Meaning before you commit to a registration date - the eligibility pathways are narrower than many candidates assume.
Registration Timeline & Deadlines
The registration window for the June 4, 2027 exam is longer than most candidates expect, but the deadlines are firm:
- Registration opens: August 4, 2026
- Standard registration closes: May 21, 2027
- Late registration window: May 22-28, 2027 (additional $400 fee applies)
That gives candidates roughly ten months between registration opening and the standard deadline - but the late window is only one week, and it carries a steep surcharge. If you're weighing whether to register early or wait until you feel "ready," the safer financial move is to register during the standard window and use a structured plan (see ACMO Study Guide 2026: How to Pass on Your First Attempt) to hit your target date rather than paying $400 extra for a short extension.
Key Takeaway
Register during the August 2026-May 2027 standard window. The late registration period exists as a safety net, not a default plan - the $400 fee is avoidable with basic calendar discipline.
Fees: What You'll Pay
Fees effective for examinations beginning August 2026 differ based on candidate status:
| Candidate Type | Standard Fee | Late Registration Add-On |
|---|---|---|
| Residency candidates | $670 | +$400 (May 22-28, 2027 only) |
| Other candidates | $1,100 | +$400 (May 22-28, 2027 only) |
These figures cover the ACMO exam registration itself. They are separate from the ABCMO certification application fee you'll pay after passing, and separate from ongoing maintenance-of-certification fees discussed later in this article. If you're budgeting for the full journey from registration through certification, see the detailed breakdown in ACMO Certification Cost 2026: Complete Pricing Breakdown.
Eligibility Before You Register
You cannot register for ACMO simply by paying the fee - eligibility is pathway-based, and Pearson VUE registration assumes you already meet one of these routes:
- A VA residency with ACOE status of Accredited or Accredited with Conditions, completed or due for completion by June 30 of the exam year
- Another completed residency carrying either qualifying ACOE status
- Active involvement in educating optometry residents
- Clinical privileges to provide optometric patient care at a federal facility
On top of one of these four pathways, every candidate must also hold active licensure with therapeutic privileges at least 3 months before testing, with no licensure sanctions and no active board investigations.
Eligibility Sanity Check
Before you pay a registration fee, confirm two things independently: (1) which of the four pathways you qualify under, and (2) that your therapeutic licensure will have been active for a full 3 months before June 4, 2027 - not 3 months before your registration date.
- Federal-facility privileges and resident-education involvement are often overlooked pathways for optometrists outside traditional VA residencies
For a full walkthrough of each pathway and documentation requirements, see ACMO Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Exam Day Format
Understanding the format matters for scheduling because it determines how much stamina - not just knowledge - you need to build before June 4, 2027. ACMO consists of:
- 40 simulated patient cases, each with 4 multiple-choice items, for a total of 160 questions
- 4 hours 30 minutes of total testing time
- Approximately 5-10% multiple-response items, allowing up to 3 correct selections per item with no partial credit
- Linked clinical/laboratory abbreviation lists and generic/trade-name drug references, available on-screen during testing
The multiple-response items deserve special attention during prep. Because there's no partial credit, a case where you correctly identify 2 of 3 required selections scores identically to one where you miss all three. This format rewards candidates who practice selecting complete answer sets, not just plausible single answers. If you want a sense of how demanding this format is compared to other credentialing exams, How Hard Is the ACMO Exam? Complete Difficulty Guide 2026 breaks down the format's practical difficulty in more depth, and ACMO Passing Score 2026: Exactly What You Need to Pass explains how scoring actually works.
Domain Weighting You Need to Plan Around
ACMO's content outline has only two domains, but the weighting is lopsided enough that it should directly shape your study calendar:
Domain 1: Ocular Disease (65-75%)
This domain carries the large majority of scored content. Expect heavy emphasis on:
- Glaucoma diagnosis, staging, and management
- Anterior segment disease presentations
- Posterior segment disease, frequently tied to clinical-image interpretation
Domain 2: Systemic Conditions (25-35%)
This domain covers systemic disease as it intersects with ocular findings and medical management decisions relevant to a practicing optometrist working alongside physicians.
Because Domain 1 can represent up to three-quarters of your scored items, allocating your prep time evenly across "two domains" would be a mistake. For the official NBEO content ranges and a topic-by-topic breakdown of both domains, see ACMO Exam Domains 2026: Complete Guide to All 2 Content Areas.
Scheduling Your Prep by Domain
Generic study techniques only matter if they're mapped onto ACMO's actual weighting. Here's how a candidate registering during the standard window (August 2026-May 2027) might sequence a multi-month plan leading into a June exam date:
Ocular Disease Foundations
- Build glaucoma staging and management frameworks first, since this subtopic recurs most often within Domain 1
- Work through anterior segment case sets before moving to posterior segment material
Clinical-Image Drilling
- Practice image-based case interpretation daily, since Domain 1's weighting means image questions appear disproportionately often
- Time yourself on multi-part cases to simulate the 4-item-per-case structure
Systemic Conditions
- Cover Domain 2 material with less total time than Domain 1, proportional to its 25-35% weighting
- Focus on systemic-ocular intersections rather than isolated systemic disease review
Full-Length Simulation
- Run full 160-question timed simulations to build stamina for the 4-hour-30-minute session
- Drill multiple-response items specifically, since no-partial-credit scoring punishes incomplete answer sets
A more granular week-by-week plan, including recommended resource types and case-review cadence, is available in ACMO Study Guide 2026: How to Pass on Your First Attempt. If you want a quick-reference companion for your final review pass, ACMO Cheat Sheet 2026: One-Page Review of Must-Know Facts condenses the highest-yield facts from both domains onto a single page. You can also run timed practice sessions on our practice test platform to get comfortable with the case-based format before test day.
After You Pass: ABCMO Application & Maintenance
Passing ACMO is a milestone, not the finish line. NBEO scores do not expire, so there's no hard clock forcing you to act immediately - but ABCMO's standard certification application normally requires that you passed ACMO within the previous 5 years. Older results can still be accepted if all other requirements are met and you document 4 years of current, continuous medical-optometry practice.
Separate ABCMO application fees apply on top of your ACMO exam fee:
| Application Year | ABCMO Standard Application Fee |
|---|---|
| 2026 | $700 |
| 2027 | $800 |
Once certified, ABCMO maintenance of certification requires active licensure, mandatory license CE plus qualifying medical-optometry elective CE, and a National Practitioner Data Bank self-query. Maintenance runs $50 per year, billed on your applicable 1-3-year renewal cycle, and newly certified specialists may request an initial-enrollment fee waiver within their first two years.
For the complete cost picture across registration, application, and maintenance, revisit ACMO Certification Cost 2026: Complete Pricing Breakdown. And if you're still deciding whether the full path is worth pursuing given your practice setting, Is the ACMO Certification Worth It? Complete ROI Analysis 2026 and ACMO Jobs both address how this credential is actually used in hiring and practice contexts.
FAQ
The next scheduled ACMO administration is June 4, 2027, delivered through Pearson VUE test centers.
Registration opens August 4, 2026 and closes May 21, 2027 for standard registration. A late registration window runs May 22-28, 2027 with an additional $400 fee.
For exams beginning August 2026, the fee is $670 for candidates in residency and $1,100 for other candidates, before any late registration surcharge.
No, NBEO exam scores do not expire. However, ABCMO's standard certification application normally requires passing ACMO within the previous 5 years, with an alternative path available if you document 4 years of continuous medical-optometry practice.
Eligibility requires one of four pathways - a qualifying VA or other residency, active involvement in educating optometry residents, or clinical privileges at a federal facility - plus active licensure with therapeutic privileges held at least 3 months before testing and no licensure sanctions or open board investigations.