NBEO Part I ABS Exam Prep Practice Test 2026

NBEO Part I ABS (Applied Basic Science) Exam Prep

Independent preparation for the National Board of Examiners in Optometry (NBEO) Part I Applied Basic Science (ABS) examination, with 300 original four-option single-best-answer practice items organized in the current official discipline-family order. The official one-day examination has 370 administered items: 350 scored items and 20 unscored pretest items, delivered in two 185-item sessions with four hours per session. The official examination also includes approximately 10–15% multiple-response items; this independent Prepd bank uses a consistent single-best-answer format and is not an examination form. Its 70% passing_score is only an independent study benchmark, not an NBEO raw-score requirement, scaled passing standard, score conversion, or prediction of licensure performance. NBEO reports Part I results on an equated 100–900 scale and describes scores above 300 as passing. This resource is independently authored and is not affiliated with, endorsed, sponsored, or approved by NBEO, Pearson VUE, ARBO, ASCO, any optometry school, or any licensing board. It contains no copied, recalled, retired, proprietary, or secure examination items and does not claim access to protected content. Completion confers no NBEO score, eligibility, license, credential, continuing-education credit, clinical privilege, or authority to diagnose, prescribe, or practice. Use current official NBEO materials because outlines and policies can change. This educational study aid does not replace optometric education, supervised clinical training, current authoritative references, product labeling, referral, patient-specific care, professional judgment, institutional policy, or applicable law.