- What This Cheat Sheet Covers
- The Exam at a Glance
- All Ten Domains and Their Weights
- Where the Points Concentrate
- Mid-Weight Domains to Lock Down
- Lighter Domains You Still Cannot Skip
- What Is Not Verified (and Why It Matters)
- Sequencing the Domains Across Your Prep
- Where COMS Credentials Are Used
- Frequently Asked Questions
- The COMS exam is issued by ACVREP and has 150 multiple-choice and multiple-select items across ten domains.
- Domain 6 (Mobility Skills and Strategies) is the heaviest at 17%, or 26 questions.
- Domain 3 (Assessment, Program Design and Delivery, Environmental Assessment) is second at 15%, or 23 questions.
- The handbook's timer reads "three (3.5) hours," so verify the exact time limit directly with ACVREP.
What This Cheat Sheet Covers
This page condenses the Certified Orientation and Mobility Specialist (COMS) examination into one scannable review. The credential is awarded by the Academy for Certification of Vision Rehabilitation and Education Professionals (ACVREP), and everything below is anchored to the published COMS Certification Handbook. If you are still sorting out the basics of the credential itself, start with What Is COMS Certification? and come back here once the terminology feels familiar.
One identity note matters before anything else: this is the orientation and mobility credential for professionals who teach safe, independent travel to people who are blind or have low vision. It is not an ophthalmic, orthoptic or occupational-therapy examination, and the content you study should reflect that. Questions are written around entry-level principles and their application with preschool, school-aged and adult clients.
The Exam at a Glance
| Item | What the Handbook Says |
|---|---|
| Credential authority | ACVREP |
| Credential | Certified Orientation and Mobility Specialist (COMS) |
| Number of items | 150 |
| Item format | Multiple-choice and multiple-select |
| Content focus | Entry-level principles and application with preschool, school-aged and adult individuals who are blind or visually impaired |
| Number of domains | 10 examination domains |
| Handbook revision visible | March 14, 2024 |
| Exam section updated / implemented | Updated January 2023; implemented February 1, 2023 |
| Time allowed | Printed as "Up to three (3.5) hours" (internally inconsistent; unresolved) |
| Passing score, pass rate, scored/unscored split | Not verified in this review |
Notice the multiple-select format. Unlike a pure single-answer test, some items require you to identify more than one correct response, which punishes partial knowledge. Practice reading every option against the scenario rather than hunting for the first plausible answer.
The visible handbook revision date and the exam-section dates are the only dating signals confirmed here. Nothing in the reviewed material establishes a revised 2026 blueprint, so treat the January 2023 implementation as the current structure unless ACVREP announces otherwise. For scheduling logistics, see COMS Exam Dates, and for eligibility questions, COMS Requirements.
All Ten Domains and Their Weights
The handbook publishes both rounded percentages and question counts. The counts sum to 150 and the percentages sum to 100%. Percentages are rounded figures, so do not expect every percentage to multiply cleanly into its question count.
| Domain | Title | Weight | Questions |
|---|---|---|---|
| 1 | Professional Information and Resources and Teaching and Learning in O&M | 11% | 16 |
| 2 | Relevant Medical Information | 8% | 12 |
| 3 | O&M Assessment, Program Design and Delivery and Environmental Assessment and Modification | 15% | 23 |
| 4 | O&M-related Concepts | 8% | 12 |
| 5 | Orientation Skills and Strategies | 12% | 18 |
| 6 | Mobility Skills and Strategies | 17% | 26 |
| 7 | Use of Senses | 8% | 12 |
| 8 | Clients with Additional Disabilities and Diverse Clients | 9% | 13 |
| 9 | Psychosocial Aspects of Blindness and Low Vision | 5% | 8 |
| 10 | Code of Ethics | 7% | 10 |
Where the Points Concentrate
Domains 6, 3 and 5 together account for 26 + 23 + 18 = 67 of the 150 questions. That is a little under half the exam in three domains, and all three are about the practical, applied work of an O&M specialist. Spend your highest-quality study hours here.
Domain 6: Mobility Skills and Strategies (17%, 26 questions)
The single largest domain. Expect scenario items where you must choose the safest and most appropriate technique for a given client and environment.
- Human guide technique, including variations for children, older adults and clients with additional needs
- Protective techniques, trailing and squaring off
- Long cane skills: grip, arc, touch technique, two-point touch, and use on stairs and curbs
- Street crossing analysis: traffic patterns, signal phases, intersection geometry and gap judgment
- Use of transit, including route planning and boarding or exiting vehicles
- Adaptive mobility devices and when each is appropriate
Domain 3: O&M Assessment, Program Design and Delivery and Environmental Assessment and Modification (15%, 23 questions)
This domain tests whether you can evaluate a client, build a defensible plan, and adapt the environment. It rewards process thinking.
- Gathering referral and background information before the first lesson
- Choosing formal and informal assessment approaches suited to age and functioning
- Writing measurable goals and sequencing instruction from simple to complex
- Lesson planning, route selection and risk management
- Assessing lighting, contrast, acoustics and layout, and recommending modifications
Domain 5: Orientation Skills and Strategies (12%, 18 questions)
Orientation is the knowing-where-you-are half of O&M. Questions test whether you can teach a client to build and use mental maps.
- Landmarks, clues, cardinal directions and numbering systems
- Cognitive mapping and route versus survey strategies
- Self-familiarization in unfamiliar settings
- Using tactile maps, models and technology as orientation aids
- Recovering orientation when a client becomes disoriented
If you are weighing how much effort the exam will take, How Hard Is the COMS Exam? breaks down which of these areas candidates tend to find demanding, from a qualitative perspective.
Mid-Weight Domains to Lock Down
Domain 1: Professional Information and Resources and Teaching and Learning in O&M (11%, 16 questions)
Blends professional context with instructional principles.
- How instruction is adapted to learning styles, age and developmental stage
- Instructional methods, feedback and shaping of skills
- Awareness of professional organizations, legislation and resources relevant to O&M practice
- Collaboration with teachers, rehabilitation professionals and families
Domain 8: Clients with Additional Disabilities and Diverse Clients (9%, 13 questions)
Tests your ability to individualize instruction rather than apply a template.
- Adapting techniques for hearing loss, deafblindness, physical disabilities and cognitive differences
- Considering cultural, linguistic and socioeconomic background in planning
- Working with older adults, children and clients in varied living settings
Lighter Domains You Still Cannot Skip
Four domains carry 5% to 8% each. They are small individually, but together they are 42 questions, or 28% of the exam. Neglecting them is a common way to lose avoidable points.
Domain 2: Relevant Medical Information (8%, 12 questions)
- Common eye conditions and their functional implications for travel
- Reading and interpreting visual function information such as acuity and field descriptions
- Linking a diagnosis to likely challenges with glare, contrast, night travel or peripheral awareness
Domain 4: O&M-related Concepts (8%, 12 questions)
- Body image, spatial and environmental concepts
- Concept development in congenitally blind children versus adventitiously blind adults
- How concept gaps affect later orientation and mobility learning
Domain 7: Use of Senses (8%, 12 questions)
- Auditory skills: localization, shorelining, traffic sound analysis and sound shadows
- Tactile and kinesthetic information gathered through cane, feet and body
- Olfactory cues and use of residual vision, including how to train efficient visual use
Domain 9: Psychosocial Aspects of Blindness and Low Vision (5%, 8 questions)
- Adjustment to vision loss and its effect on motivation to travel
- Family, peer and community attitudes
- How anxiety, confidence and self-advocacy influence lesson design
Domain 10: Code of Ethics (7%, 10 questions)
- Client welfare, confidentiality and informed participation
- Professional boundaries and honest representation of competence
- Safety responsibilities during instruction and appropriate responses to ethical dilemmas
What Is Not Verified (and Why It Matters)
A good cheat sheet is as honest about gaps as it is about facts. Several details that candidates frequently ask about were not confirmed in the source review behind this page.
- Timer: The handbook prints "Up to three (3.5) hours is allowed." That wording conflicts with itself, and the reviewed sources do not resolve whether the limit is three hours or three and a half. Confirm directly with ACVREP before test day and plan your pacing conservatively.
- Passing score: Not verified here. See COMS Passing Score for how to approach the question.
- Pass rate: Not verified here. COMS Pass Rate discusses what can and cannot be said responsibly.
- Scored versus unscored items: Not verified here, so avoid any claim about how many of the 150 count toward your result.
- Fees: Fee amounts and registration mechanics should be taken from ACVREP's current materials. COMS Certification Cost explains how to think about the full cost picture.
Key Takeaway
Pace yourself against the more conservative reading of the timer. With 150 items, budgeting by the shorter possible limit costs you nothing if you turn out to have extra time, and protects you if you do not.
Sequencing the Domains Across Your Prep
Rather than studying in handbook order, sequence by weight and dependency. Concept and sensory foundations come first because they underpin the applied skills that dominate the exam. This is a COMS-specific framing, not a generic schedule; adjust the pace to your own timeline.
Foundations
- Domain 2 (medical information) and Domain 4 (O&M-related concepts)
- Build vocabulary for eye conditions and concept development before tackling technique
Senses and Orientation
- Domain 7 (use of senses) and Domain 5 (orientation skills and strategies)
- Practice explaining how a client would use cues and mental maps
Mobility Core
- Domain 6 (mobility skills and strategies), your heaviest domain
- Work through technique selection scenarios, especially street crossings
Assessment and Instruction
- Domain 3 (assessment, program design and environmental modification) and Domain 1 (professional resources and teaching)
- Practice sequencing a plan from referral to goal-setting
Individualization and Judgment
- Domain 8 (additional disabilities and diverse clients), Domain 9 (psychosocial aspects) and Domain 10 (code of ethics)
- Finish with full-length mixed practice under timed conditions at our practice test site
Ethics and psychosocial questions often reward careful reading of the scenario rather than memorized facts, so interleave them with applied domains during final review. A realistic baseline for your timing and weak areas comes from full-length runs on the COMS practice exam platform.
Where COMS Credentials Are Used
The COMS credential is relevant to professionals who deliver orientation and mobility services across the lifespan. Typical settings include school districts and educational agencies serving students with visual impairments, agencies and centers that provide adult rehabilitation, state vocational rehabilitation or services-for-the-blind programs, and private or contract practice. Healthcare-linked rehabilitation programs and veterans' services may also employ O&M specialists, depending on region.
For a realistic look at openings and the kinds of positions advertised, see COMS Jobs. If you are weighing the investment, COMS Salary Guide and Is the COMS Certification Worth It? cover earnings and return in more depth, and COMS Training outlines the preparation pathway.
Frequently Asked Questions
The handbook specifies 150 multiple-choice and multiple-select items spread across ten examination domains. The published domain question counts are 16, 12, 23, 12, 18, 26, 12, 13, 8 and 10.
Domain 6, Mobility Skills and Strategies, is the largest at 17%, or 26 questions. Domain 3, covering assessment, program design and delivery, and environmental assessment and modification, follows at 15%, or 23 questions.
The handbook's wording is "Up to three (3.5) hours is allowed," which is internally inconsistent. The reviewed sources do not settle three hours versus three and a half, so confirm the exact limit with ACVREP and pace yourself conservatively.
The reviewed material shows a handbook revision dated March 14, 2024, with the examination section updated in January 2023 and implemented February 1, 2023. Nothing reviewed establishes a revised 2026 blueprint, so check ACVREP for any announced changes.
A current passing threshold was not verified in this source review, so this page does not state one. Consult ACVREP's official materials, and see our COMS Passing Score article for guidance on interpreting scoring information responsibly.