The National Opticianry Competency Examination (NOCE) is the national certification exam for opticians seeking credentials through the American Board of Opticianry (ABO) and the National Contact Lens Examiners (NCLE). Passing the ABO and NCLE exams earns you the coveted ABO-NCLE designation — the gold standard in opticianry certification across the United States.
Who takes the NOCE? Opticians, opticianry students, and apprentice dispensers who want to demonstrate competency in fitting and dispensing eyeglasses (ABO) or contact lenses (NCLE). Many states require ABO or ABO-NCLE certification for licensure, making these exams essential for career advancement.
The ABO exam consists of 125 multiple-choice questions completed in 2.5 hours, covering spectacle optics, lens materials, frame fitting, prescription interpretation, and lens treatments. The NCLE exam is slightly longer — 150 questions in 2.5 hours — and focuses entirely on contact lens theory, fitting, and patient care.
Practicing with a NOCE practice test PDF is one of the most effective ways to prepare. PDFs let you study offline, annotate questions, simulate timed conditions, and review answers without needing an internet connection. Download our free PDF below, work through the questions, and identify the topics where you need the most review before exam day.
The ABO exam tests five major content areas. Understanding each domain helps you allocate study time wisely and spot your weak points before you sit for the real thing.
Optics questions cover the physics of light as it relates to eyeglass lenses. You'll encounter problems involving lens power (sphere, cylinder, and axis), prism (base direction, Prentice's Rule), vergence (convergent vs. divergent light), and refraction at lens surfaces. Expect calculations — know how to transpose prescriptions and calculate induced prism at off-center gaze points. Prentice's Rule (Prism = Power × Decentration in cm) shows up repeatedly.
Modern opticianry requires fluency with lens material options. The exam tests properties and clinical applications of CR-39 (the standard plastic, low cost, good optics, index 1.50), polycarbonate (impact-resistant, required for children and safety eyewear, index 1.586), high-index plastics (1.60, 1.67, 1.74 — thinner lenses for strong prescriptions), and Trivex (lightest material, excellent impact resistance, index 1.53). Know the Abbe values — CR-39 has the highest (~58), polycarbonate the lowest (~30), which means more chromatic aberration at the periphery.
Frame fitting questions cover pupillary distance (PD) measurement — both monocular and binocular, near vs. distance — fitting heights (especially for progressive lenses), and frame materials. You should know the properties of acetate (lightweight, hypoallergenic, color options), metal (adjustable, durable), and titanium (extremely lightweight, corrosion-resistant, ideal for allergy patients). Adjusting skills — nose pad adjustment, temple bending, pantoscopic tilt — are also tested.
Dispensers must read and verify eyeglass prescriptions accurately. The ABO exam covers transposition (converting plus cylinder to minus cylinder form and vice versa), reading sphere/cylinder/axis notation, calculating vertex distance adjustments (critical for prescriptions above ±4.00D when moving from trial frame to finished spectacles), and identifying prescription errors or out-of-tolerance lenses using a lensometer. Practice transposing prescriptions quickly — it's one of the most tested skills.
Patients expect opticians to explain and recommend lens enhancements. The exam covers anti-reflective (AR) coating (reduces glare and reflections, improves cosmetic appearance, especially important for high-index lenses), UV protection (polycarbonate inherently blocks UV; CR-39 and glass require a UV coating), photochromic lenses (darken outdoors, clear indoors — know brand names and the caveat about car windshields blocking UV activation), polarized lenses (eliminate horizontal glare from reflective surfaces, excellent for driving and outdoor activities), and tinting (cosmetic vs. functional, density percentages).
The ABO and NCLE are companion exams but test entirely different skills. The ABO (American Board of Opticianry) credential certifies competency in spectacle dispensing — eyeglass optics, frame fitting, lens selection, and prescription verification. It's the foundation credential for retail opticians.
The NCLE (National Contact Lens Examiners) exam tests contact lens fitting and management — corneal anatomy, lens parameters, fitting techniques, patient education, and follow-up care. Most contact lens fitters pursue both the ABO and NCLE, earning the combined ABO-NCLE designation.
State licensing requirements vary significantly. States like Florida, Connecticut, and Rhode Island require ABO certification (or equivalent) for licensure. Others, such as Texas and California, require passing state board exams in addition to or instead of ABO-NCLE. Always check your state's specific board of opticianry requirements before registering for exams.
Ready to start practicing? Visit our full NOCE practice test page for additional quizzes, flashcards, and study resources. Use the PDF alongside our online tests — the PDF is great for timed offline sessions, while our online quizzes give you instant feedback and explanations for every answer.