COE Study Guide 2026
Everything you need to pass the COE exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 COE Exam Format at a Glance
📚 COE Topics to Study (21)
✍️ Sample COE Questions & Answers
1. Which of the following is an essential feature of a good EHR system for ophthalmic practices?
An essential feature of a good EHR system for an ophthalmic practice is its ability to support detailed clinical documentation tailored to ophthalmology. This includes specialized templates for eye exams, visual acuity, intraocular pressure, imaging results, and surgical notes. These specific capabilities are crucial for accurate record-keeping and delivering high-quality, specialized patient care.
2. To safeguard the practice's assets and prevent fraud, a crucial internal control is the segregation of duties. Which of the following scenarios best exemplifies this principle?
Segregation of duties is an internal control designed to prevent fraud and errors by ensuring that no single individual has control over all aspects of a financial transaction. Having one person handle the physical payment (opening mail, preparing deposits) and another handle the recording of that payment (posting to accounts) creates a system of checks and balances.
3. The Net Promoter Score (NPS) measures:
NPS surveys patients on how likely they are to recommend the practice on a 0–10 scale, yielding a single loyalty metric.
4. An ophthalmology practice's marketing plan should be reviewed and updated:
An annual review—or more frequent review triggered by major market or internal changes—ensures the marketing plan remains relevant, effective, and aligned with current practice objectives.
5. In Lean methodology, 'waste' (muda) in an ophthalmic practice includes all of the following EXCEPT:
Documented clinical protocols are a form of standardization and quality assurance, not waste; Lean targets non-value-adding activities.
6. Diabetic retinopathy is a significant cause of vision loss. The primary cause of this condition is damage to which of the following eye structures?
Diabetic retinopathy is a microvascular complication of diabetes caused by chronic high blood sugar levels damaging the small blood vessels within the retina. This damage can lead to leakage of fluid (macular edema) or the growth of abnormal new blood vessels, both of which can severely impair vision.
🎯 Free COE Practice Tests
📖 COE Guides & Articles
What Practice Test Geeks adds beyond an AI chat for COE
An AI chatbot can quiz you, but it can't reproduce the exam conditions or keep your record. Here you get:
- A timed, full-length COE mock exam — 150 questions in 180 minutes with a 70% pass mark, modeled on the official exam's question count and time limit, followed by a score report broken down by exam domain.
- A fixed COE question bank: the same test every attempt, so your score is comparable from one try to the next instead of changing with every regenerated quiz.
- Progress saved on your device: completed tests, scores and missed questions stay in My Progress, so you can retake only what you got wrong.
- A printable COE cheat sheet you can print or save as a PDF.
- COE flashcards built from the same question bank.
- Free COE practice tests with the correct answer shown after each question.