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Practice Questions
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Core Topics
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Practice Questions
The NBEO® Part I is 370 questions. You'll be extra ready.
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Core Topics
Grouped by concepts as outlined by the NBEO®.
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Personalized Experience
Tailored question ordering and performance analytics to reinforce your weakest areas.
Total
497
Done
497
Accuracy
100%
Total
491
Done
452
Accuracy
82%
Total
484
Done
68
Accuracy
92%
Total
480
Done
116
Accuracy
16%
Visualize your complete learning journey with detailed analytics that track your mastery.
Real-time performance analytics that identify your strongest and weakest areas across all 17 NBEO® topics.
Demo preview — Values shown are for display purposes only
During fluorescein angiography, sodium fluorescein first appears in which of the following vascular structures?
Correct!
During intravenous fluorescein angiography, sodium fluorescein rapidly enters the systemic circulation. The posterior segment’s blood supply originates from the ophthalmic artery; its short posterior ciliary artery branches directly supply the choroid. The choriocapillaris, the innermost, highly fenestrated capillary layer of the choroid, receives this arterial blood directly. Its rich, high-flow network ensures it is the first ocular vascular structure in the posterior pole to perfuse with fluorescein, typically within 10-15 seconds post-injection.
The rapid, uniform perfusion of the choriocapillaris is a defining early phase angiographic feature. This early, consistent filling distinguishes it from the typically delayed and less uniform retinal circulation, crucial for differentiating choroidal from retinal pathologies.
Lucky GuessTotal
497
Done
497
Accuracy
100%
Total
491
Done
452
Accuracy
82%
Total
488
Done
330
Accuracy
4%
Total
484
Done
68
Accuracy
92%
Total
480
Done
116
Accuracy
16%
Total
477
Done
9
Accuracy
33%
Real-time performance analytics that identify your strongest and weakest areas across all 17 NBEO® topics.
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Visualize your complete learning journey with detailed analytics that track your mastery.
Demo preview — Values shown are for display purposes only
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Preparing for NBEO® Part I can feel overwhelming and isolating. OPTA began with students trading questions, discussing high-yield concepts, and looking for a more active way to learn together.
We built a student-led platform that combines detailed practice, adaptive analytics, and a nationwide community where future optometrists can share mnemonics, encouragement, and momentum.
Practice makes perfect. One pass at a time.
“The variety of questions on OPTA was a huge factor in my NBEO Part I preparation. It kept me from just memorizing patterns and forced me to actually understand the concepts. If you learn best by doing questions rather than just reading, this is hands-down the best tool for prep.”
Jon
March 2026