NBEO Study Guide 2026
Everything you need to pass the NBEO 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.
📋 NBEO Exam Format at a Glance
📚 NBEO Topics to Study (21)
✍️ Sample NBEO Questions & Answers
1. A flame-shaped hemorrhage in the nerve fiber layer is most commonly associated with which condition?
Hypertensive retinopathy produces flame-shaped (splinter) hemorrhages because elevated blood pressure ruptures nerve fiber layer vessels that spread along axonal bundles.
2. What is the treatment for herpes simplex keratitis?
HSV keratitis requires antiviral therapy. Topical antivirals treat epithelial disease. Stromal disease may require steroids (carefully, with antiviral cover) to reduce inflammation and prevent scarring.
3. Internuclear ophthalmoplegia (INO) is caused by a lesion in which structure?
INO results from disruption of the MLF, which connects the contralateral abducens nucleus to the ipsilateral medial rectus subnucleus, impairing adduction.
4. A +7.00 D lens has a real object located 20 cm from the lens. The conjugate image is:
Explanation: With a +7.00 D lens and a real object 20 cm from the lens, the image is real and located 50 cm from the lens. This is because the lens equation yields this result.
5. What is the hallmark OCT finding in central serous chorioretinopathy (CSCR)?
CSCR is characterized by a serous detachment of the neurosensory retina overlying a focal RPE leak, appearing as subretinal fluid on OCT.
6. According to the Amblyopia Treatment Studies (ATS), which of the following is an effective initial treatment for a 5-year-old child with moderate amblyopia (20/80) due to strabismus?
The Pediatric Eye Disease Investigator Group (PEDIG) Amblyopia Treatment Studies (ATS) demonstrated that for moderate amblyopia (20/40 to 20/100) in children aged 3 to <7 years, patching the sound eye for 2 hours daily is as effective as patching for 6 hours daily. [16, 17, 18] This minimal effective dose is often preferred to enhance compliance.