100+ Free COA Certified Ophthalmic Assistant Practice Questions
Pass your JCAHPO Certified Ophthalmic Assistant (COA) Certification exam on the first try — instant access, no signup required.
A patient with a history of herpes simplex keratitis presents for follow-up. Which examination finding is most characteristic of a healed herpetic corneal lesion?
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Key Facts: COA Certified Ophthalmic Assistant Exam
200
Exam Questions
IJCAHPO COA examination page
3 hrs
Exam Time
IJCAHPO (180 minutes)
$300
Exam Fee
IJCAHPO fee schedule
42%
Patient Evaluation Weight
IJCAHPO Core Criteria Handbook
3 yrs
Recertification Cycle
IJCAHPO recertification requirements
IJCAHPO's COA exam consists of 200 multiple-choice questions with a 180-minute time limit, administered at Pearson VUE test centers (also available via OnVUE remote proctoring). The exam fee is $300 (or $150 practice exam + $150 upon passing). Passing is determined by a modified Angoff criterion-referenced method. The COA content breakdown effective August 1, 2025 spans 22 content areas, led by History and Documentation (9%), General Medical Knowledge (8%), Ophthalmic Patient Services and Education (8%), Visual Assessment (7%), Pupil Assessment (7%), and Tonometry (7%). Recertification is required every 3 years with 18 CE credits.
Sample COA Certified Ophthalmic Assistant Practice Questions
Try these sample questions to test your COA Certified Ophthalmic Assistant exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1A patient reports sudden onset of flashing lights and floaters in one eye. What is the most appropriate next step for the ophthalmic assistant?
2When measuring visual acuity using a Snellen chart, the patient can read the 20/40 line with the right eye. What does this result indicate?
3During Goldmann applanation tonometry, what is the target endpoint the examiner should observe?
4Which cranial nerve is primarily responsible for the pupillary light reflex?
5A relative afferent pupillary defect (RAPD) is best detected using which technique?
6When performing manual keratometry, what ocular structure is being measured?
7Which extraocular muscle is innervated by the abducens nerve (cranial nerve VI)?
8During the cover-uncover test, the examiner covers the right eye and observes the left eye move inward to fixate. What type of deviation does this indicate?
9What is the standard working distance for performing streak retinoscopy?
10When performing lensometry on a patient's spectacles, the instrument is focused on the lens and the examiner sees a sphere power of -3.00 with no cylinder. What does this indicate?
About the COA Certified Ophthalmic Assistant Exam
The Certified Ophthalmic Assistant (COA) is the entry-level core certification from IJCAHPO for allied ophthalmic personnel. The 200-question multiple-choice exam covers patient evaluation, clinical procedures, pharmacology, imaging, optics, and office responsibilities across five major content domains weighted toward assessments and interventions.
Questions
200 scored questions
Time Limit
3 hours
Passing Score
Criterion-referenced (modified Angoff)
Exam Fee
$300 (IJCAHPO)
COA Certified Ophthalmic Assistant Exam Content Outline
History and Documentation
Chief complaint, ophthalmic history, medication/allergy documentation, and accurate recordkeeping
Visual Assessment
Visual acuity, near and distance testing, pinhole, and test-condition controls
Visual Field Testing
Confrontation, automated fields, patient instruction, reliability cues, and common defect patterns
Pupil Assessment
Pupil size, equality, reactivity, RAPD screening, and documentation of abnormal responses
Tonometry
Intraocular pressure measurement, equipment technique, safety, and error recognition
Keratometry
Corneal curvature measurement, mires, contact lens context, and common setup errors
Lensometry
Spectacle prescription verification, sphere, cylinder, axis, prism, and add power basics
Biometry
Axial length and intraocular lens measurement concepts used in ophthalmic testing workflows
Diagnostic Ultrasound
A-scan and B-scan fundamentals, safety, indications, and patient-preparation basics
Supplemental Testing
Ancillary ophthalmic tests and when they support diagnosis, monitoring, or procedural planning
Microbiology
Infection control, contamination prevention, and organisms or procedures relevant to eye care
Pharmacology
Ophthalmic medication classes, dilation, contraindications, side effects, and patient safety
Surgical Assisting
Preoperative, intraoperative, and postoperative assisting responsibilities and sterile technique
Ophthalmic Patient Services and Education
Patient communication, education, instructions, accessibility, and coordinated care
Optics and Spectacles
Basic optics, spectacle correction, prescription components, and lens-related patient support
Contact Lenses
Contact lens types, handling, hygiene, patient instruction, and safety concerns
Equipment Maintenance and Repair
Routine care, calibration awareness, cleaning, troubleshooting, and safe equipment use
Medical Ethics, Legal, and Regulatory Issues
Ethical behavior, confidentiality, consent, scope, documentation, and regulatory awareness
General Medical Knowledge
Medical terminology, anatomy, physiology, systemic disease, and clinical fundamentals relevant to ophthalmology
Refraction
Refraction terminology, retinoscopy/autorefraction context, and refractive error basics
Ophthalmic Imaging
Imaging modalities, capture quality, documentation, and recognizing when images are clinically usable
Ocular Motility Testing
Extraocular movements, alignment, diplopia cues, and motility documentation
How to Pass the COA Certified Ophthalmic Assistant Exam
What You Need to Know
- Passing score: Criterion-referenced (modified Angoff)
- Exam length: 200 questions
- Time limit: 3 hours
- Exam fee: $300
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
COA Certified Ophthalmic Assistant Study Tips from Top Performers
Frequently Asked Questions
How many questions are on the COA exam?
The COA exam consists of 200 multiple-choice questions. All questions are scored, and the exam is based on a content outline developed through job analysis research conducted every five years.
How long is the COA exam?
You have 180 minutes (3 hours) to complete the COA examination. The exam is computer-based and administered at Pearson VUE test centers or via OnVUE online proctoring.
What score do I need to pass the COA exam?
The COA passing score is set using a modified Angoff criterion-referenced method. IJCAHPO does not publish a fixed passing percentage. Your performance is measured against a minimum competency standard established by expert judges.
How much does the COA exam cost?
The initial COA exam fee is $300. IJCAHPO also offers a practice examination option at $150, with an additional $150 due upon passing. Retest fees are $250 for the first retest and $150 for the second.
What are the COA exam eligibility requirements?
You must hold a high school diploma or equivalent, plus either complete an accredited ophthalmic assistant program or have qualifying work experience under an ophthalmologist's supervision. A sponsoring ophthalmologist signature is required.
How should I prepare for the COA exam in 2026?
Focus study time proportionally: 42% on patient evaluation skills, 22% on interventions and procedures, and 19% on office responsibilities. Use IJCAHPO study guides and multiple resources, as JCAHPO draws questions from various reference materials.