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Free ABS Practice Test

Pass the NBEO Part I Applied Basic Science exam with confidence.

Start with a free ABS practice test and build exam-ready confidence for the NBEO Part I Applied Basic Science exam.

4.9/5 from 2,400+ candidates
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1000+ABS Questions
5Exam Domains
10Free Questions
2026Updated
What you get

Everything your ABS certification prep needs

Practice expert-vetted questions, find your weak domains, and turn every mistake into a focused review plan.

Expert-vetted questions

Every question is reviewed by an experienced ABS professional for clarity, accuracy and practical exam relevance.

See what to study next

Domain analytics show which parts of the exam blueprint are holding you back.

Turn mistakes into confidence

Missed questions become a review list, so nervous guessing turns into focused repetition.

1,000+ exam-realistic questions
All 5 ABS domains
Weighted to the exam blueprint
Clear answer explanations
Updated for the 2026 exam
Instant, one-time access
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Your exam readiness

Track your readiness, domain strengths, and recent results at a glance.

Your exam readiness

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Study by domain

Practice the ABS exam by domain

1. Anatomy - Gross, Neuroanatomy, Histology, Developmental (12-18%)

Key exam domain

Identify weak areas and improve with focused review.

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2. Biochemistry / Physiology (10-14%)

Key exam domain

Identify weak areas and improve with focused review.

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3. Immunology / Microbiology / Pathology (22-30%)

Key exam domain

Identify weak areas and improve with focused review.

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4. Optics - Geometrical, Physical, Ophthalmic, Physiological (31-35%)

Key exam domain

Identify weak areas and improve with focused review.

Start Practicing

5. Pharmacology (11-17%)

Key exam domain

Identify weak areas and improve with focused review.

Start Practicing
Built for practice, not passive reading Active recall and repetition build real exam-day readiness.
Written to match the real exam Every question mirrors the style, difficulty, and phrasing of the actual ABS exam.
Aligned to the ABS blueprint Weighted across every exam domain, so you practice exactly what's tested.
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Before you decide

Frequently asked questions

Straight answers about the ABS exam, the questions, pricing, the free trial, and how this fits your prep.

The ABS exam spans 5 domains - Anatomy - Gross, Neuroanatomy, Histology, Developmental (12-18%), Biochemistry / Physiology (10-14%), Immunology / Microbiology / Pathology (22-30%), Optics - Geometrical, Physical, Ophthalmic, Physiological (31-35%), and Pharmacology (11-17%). Every practice question maps to one of them, so you train on exactly what's tested.

The NBEO Part I Applied Basic Science (ABS) exam has 370 questions and is completed in 8 hours. Our timed practice tests mirror that length and pacing, so exam day feels familiar.

No - and that matters. These are original practice questions written to mirror the style, difficulty, and domain coverage of the ABS exam blueprint. We never distribute actual exam content, so practicing here keeps you fully compliant with official exam policies.

No. ABS Exam Prep is an independent study resource for NBEO Part I Applied Basic Science (ABS). It is not affiliated with, sponsored by, or endorsed by the official certifying body or exam administrator.

What candidates say

Trusted by ABS candidates

Real feedback from ABS candidates on Reddit.

★★★★★
Sourced from Reddit

"wasnt expecting the optics section to wreck me as much as it did but grinding the practice questions on repeat actually got the geometrical optics stuff to click. passed first try, still kinda in shock ngl."

r/optometry Posted on Reddit
★★★★★
Sourced from Reddit

"honestly put off studying for way too long and panicked about a month out. ended up using applied-basic-science-exam.com mostly for the immuno/micro/path section since thats such a huge chunk of the exam, and the mistake review feature made me actually fix the stuff i kept getting wrong instead of just rereading notes."

r/optometry Posted on Reddit
★★★★★
Sourced from Reddit

"did a full length mock exam thru this site the weekend before and it was rough but showed me my pacing was off for an 8 hour test. fixed that and it made test day feel alot less overwhelming."

r/optometry Posted on Reddit

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