Study for the NCLE exam by following ABO-NCLE’s CLRE test specifications. Dispensing and Follow-Up carry 20 questions each, Prefitting 15, Anatomy, Physiology & Pathology and Instrumentation 12 each, Diagnostic Fitting 11, and Refractive Errors and Regulatory & Administrative 5 each. The exam is 125 questions in 2 hours; ABO-NCLE reports a 59.0% pass rate for 2024.
Last checked . Confirm fees and dates with the certifying body. optical.education is independent and is not affiliated with or endorsed by ABO-NCLE. Disclaimer.
The official CLRE blueprint
ABO-NCLE’s 2026 Basic Exam Handbook lists the “Contact Lens Registry Examination (CLRE) Basic Test Specifications (100 questions)” below. The exam itself has 125 questions: some are unscored pretest items, and you can’t tell which. For format and fees, see our NCLE certification guide.
| Domain | Questions (of 100 specified) |
|---|---|
| I. Ocular Anatomy, Physiology, and Pathology | 12 |
| II. Refractive Errors | 5 |
| III. Instrumentation for Measurement and Observation | 12 |
| IV. Prefitting | 15 |
| V. Diagnostic Fitting | 11 |
| VI. Dispensing | 20 |
| VII. Follow-Up | 20 |
| VIII. Regulatory and Administrative | 5 |
What the 59.0% pass rate tells you, and what it doesn’t
ABO-NCLE’s Basic Exam page (opens in a new tab) reports a 59.0% pass rate for the NCLE in 2024. It also says that, while no prior experience is required, candidates with 2–3 years of hands-on experience or an optical school program have higher success rates. ABO-NCLE does not publish a fixed passing percentage; see how ABO-NCLE scoring and fees work. A pass rate describes past candidates as a group. It can’t predict your result.
Step 1: Take a baseline
Do a set of free NCLE practice questions and tally your misses by domain. Then rank your time by weight × weakness: a weak domain worth 20 questions deserves more hours than a weak domain worth 5. That’s our framework, not an ABO-NCLE rule.
Step 2: Follow-up and dispensing (40 of 100 specified questions)
These two domains carry the most weight. At outline level, Dispensing covers wearing schedules and replacement intervals, lens care and disinfection systems, solution compatibility, and insertion and removal techniques for soft and rigid lenses. Follow-Up covers what patients report, what you observe (fit problems and contact-lens-related conditions), how the fit is assessed, and the follow-up plan, including documenting patient records.
Step 3: Prefitting and diagnostic fitting
Prefitting (15) covers evaluating the patient, lens materials and their properties, special designs, and choosing lens parameters such as base curve, diameter, and power. Diagnostic Fitting (11) covers lens selection and application, fluorescein pattern evaluation, and judging movement, centration, and comfort. Our keratometry basics guide explains K readings, which the Instrumentation domain also uses.
Step 4: Anatomy, refractive errors, instruments, and regulatory
Ocular Anatomy, Physiology & Pathology and Instrumentation for Measurement and Observation carry 12 questions each. Refractive Errors and Regulatory & Administrative carry 5 each. In the 2026 handbook, Domain VIII has two parts: administrative tasks (record retention, chart documentation, product availability, inventory, and ordering) and laws and regulations. The second part lists regulatory and manufacturer guidelines for lens disinfection, storage, and care; who may prescribe contact lenses; verifying the patient’s visit to the original prescriber; recall procedures; federal guidelines (the handbook names CDC, OSHA, FDA, FTC, FCLCA, and ANSI); patient record confidentiality (HIPAA and protected health information); and federal rules on releasing records, with glasses and contact lenses as the handbook’s examples. Study these from the handbook outline; it lists the topics without the rules themselves.
Example 6–8 week plan
This is an example only. ABO-NCLE does not prescribe a study length; stretch or compress it based on your baseline.
| When | Focus |
|---|---|
| Week 1 | Baseline quiz; tally misses by domain. Start Follow-Up (20). |
| Week 2 | Follow-Up (20): subjective and objective findings, assessment, and follow-up plans. |
| Week 3 | Dispensing (20): wearing schedules, replacement, care systems and solutions, insertion and removal. |
| Week 4 | Prefitting (15): evaluating the patient, lens materials and designs, and choosing lens parameters. |
| Week 5 | Diagnostic Fitting (11) and Instrumentation (12): fit evaluation, keratometry, topography, slit lamp, verification. |
| Week 6 | Anatomy, Physiology & Pathology (12), Refractive Errors (5), and Regulatory & Administrative (5). |
| Weeks 7–8 (optional) | Timed full-length simulation (125 questions, 2 hours), then review every miss by domain. |
Test-day mechanics
- Pacing: 125 questions in 2 hours is about 58 seconds per question on average.
- Where: a Prometric test center or ProProctor remote proctoring (handbook).
- Calculator and guessing: the handbook says an on-screen scientific calculator is provided and there is no penalty for guessing.
- Retakes: wait 14 days after a failed attempt; after a third failed attempt, wait 90 days. Each attempt is paid again: $275 on the Oct–Dec 2026 registration page (opens in a new tab).
After the basic: the NCLE practical (NCLEP)
Some licensing states also require ABO-NCLE’s practical exams. The NCLEP is a 30-question, 60-minute computer-based exam taken only at Prometric test centers, for candidates who already hold NCLE certification. See NCLE practical exam (NCLEP) for format, cost, and which states name it.
Our exam prep is not continuing education and doesn’t award CECs. More answers in the NCLE exam FAQ.
Frequently asked questions
What is the NCLE exam pass rate?
ABO-NCLE reports a 59.0% pass rate for the NCLE Basic exam in 2024. That is the only official figure it publishes; it does not publish a passing percentage or pass rates by state or by training route.
What’s on the NCLE exam?
ABO-NCLE’s CLRE test specifications cover eight domains (100 specified questions): Dispensing 20, Follow-Up 20, Prefitting 15, Ocular Anatomy, Physiology & Pathology 12, Instrumentation for Measurement and Observation 12, Diagnostic Fitting 11, Refractive Errors 5, and Regulatory & Administrative 5. The exam itself has 125 questions, including unscored pretest items.
Should I study differently for the NCLE than for the ABO?
Yes, because the blueprints differ. The CLRE puts 40 of its 100 specified questions on Dispensing and Follow-Up of contact lens patients, while the ABO’s NOCE puts its largest share (25) on Ophthalmic Optics math. For the NCLE, spend most of your time on lens care, wear schedules, fit problems, and follow-up findings.
See also: ABO vs NCLE
How long should I study for the NCLE?
ABO-NCLE does not prescribe a study length. Our example plan runs 6 to 8 weeks, but that is a suggestion. Take a baseline quiz first and plan more time for the heavily weighted domains you miss most.
Do I need contact lens experience to take the NCLE?
No. ABO-NCLE’s eligibility requirement is a high school diploma, GED, or equivalent, and its Basic Exam page says no prior experience is required. ABO-NCLE also says candidates with 2–3 years of hands-on experience or an optical school program have higher success rates. If your state has its own rules, they take precedence.
Sources: ABO-NCLE — Basic Exam overview (opens in a new tab) ; ABO-NCLE Basic Exam Handbook (October 2026 edition, linked from the Oct–Dec 2026 registration pages) (opens in a new tab)
Can I take the NCLE from home?
Yes, the NCLE Basic (CLRE) can be taken at a Prometric test center or by ProProctor remote proctoring, according to ABO-NCLE’s 2026 handbook. The NCLE Practical (NCLEP) is test-center only. If you need the exam for a state license, check that your state accepts the remote option.
Do I need the ABO before the NCLE?
No. They are separate exams with the same eligibility requirement (a high school diploma, GED, or equivalent), and you can take either one first.
See also: ABO vs NCLE: which to take first
Official sources
- ABO-NCLE Basic Exam Handbook (October 2026 edition, linked from the Oct–Dec 2026 registration pages) (opens in a new tab)
- ABO-NCLE — Basic Exam overview (opens in a new tab)
- ABO-NCLE — NCLE Basic Examination, Oct–Dec 2026 registration (opens in a new tab)
Last reviewed . Requirements, fees, and dates change — always confirm with the official source before you register or apply. ABO-NCLE and IJCAHPO are the only authorities for their own exam facts, so those facts rest on a single source.