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125
Multiple-choice questions
2 Hours
Computer-based test
70%
Minimum to pass
NCLE
National certification
Eye structure, tear film, cornea
Myopia, hyperopia, astigmatism
Keratometry, biomicroscopy
Patient assessment, lens selection
Lens evaluation, troubleshooting
Patient education, lens care
Progress checks, complications
Standards, documentation
Master the essential concepts and calculations for contact lens fitting. These in-depth guides cover the most tested topics on the NCLE exam.
Learn how to measure corneal curvature and interpret K-readings for contact lens fitting.
Understand with-the-rule and against-the-rule astigmatism patterns and age-related changes.
Master the calculation and clinical significance of lenticular astigmatism.
Learn SAM-FAP rule and master base curve selection for RGP and soft lenses.
Study ocular anatomy, physiology, and refractive errors. Complete 20-30 practice questions daily. Build a strong foundation in eye structure and function.
Master instrumentation, prefitting, and diagnostic fitting procedures. Increase to 40-50 questions daily. Focus on lens evaluation and troubleshooting scenarios.
Cover dispensing, follow-up care, and administrative procedures. Take full-length practice exams. Review all domains with emphasis on weak areas. Prepare mentally for exam day.
Diagnostic fitting is 20% of the exam. Focus heavily on evaluating lens fit and troubleshooting issues.
Review material at optimal intervals to maximize retention. Opterio handles this automatically.
Know how to use and interpret keratometers, biomicroscopes, and other diagnostic tools.
Consistency beats cramming. Dedicate time each day, even if it's just 30 minutes.
Review detailed explanations for every question, especially incorrect answers.
Take timed, full-length practice tests to build stamina and reduce test anxiety.
Join thousands of certified contact lens specialists who passed their NCLE exam with Opterio
Adaptive algorithms identify your weak areas and create personalized study plans for maximum efficiency.
1000+ NCLE-specific practice questions covering all 8 exam domains with expert-written explanations.
Get personalized explanations for complex contact lens concepts, fitting scenarios, and troubleshooting.
Track performance across all 8 domains. See exactly where you excel and where you need more practice.
Visual dashboards predict exam readiness and show your improvement trajectory over time.
Practice on web or mobile. Study during breaks, commutes, or whenever fits your schedule.
Explore real exam-style questions with detailed AI-powered explanations. Each question includes clinical pearls and practical fitting scenarios.
The NCLE (National Contact Lens Examiners) exam, also known as CLRE (Contact Lens Registry Exam), is the certification exam for contact lens technicians and specialists. It consists of 125 multiple-choice questions covering 8 domains: Ocular Anatomy & Physiology, Refractive Errors, Instrumentation & Observation, Prefitting, Diagnostic Fitting, Dispensing, Follow-Up Care, and Regulatory & Administrative procedures. The exam tests comprehensive knowledge of contact lens fitting, patient care, and professional standards.
The NCLE exam requires a minimum scaled score of 70% to pass. Like the ABO exam, NCLE uses scaled scoring where your raw score is converted to a scale of 0-100. Results are provided immediately after completing the computer-based test, including detailed performance breakdowns for each of the eight exam domains.
Most successful candidates study for 2-4 months, dedicating 1-2 hours daily to focused preparation. The NCLE exam covers more specialized content than the ABO, particularly in contact lens fitting and troubleshooting. Candidates with hands-on contact lens experience may need less preparation time. Opterio's adaptive learning platform personalizes your study plan based on your current knowledge level and identifies areas requiring additional focus.
Opterio provides AI-powered personalized study plans that adapt to your learning style and pace, comprehensive coverage of all 8 NCLE exam domains with 1000+ practice questions, instant AI-generated explanations that break down complex contact lens concepts, spaced repetition algorithms proven to improve retention, detailed progress analytics showing weak areas by domain, flexible study options with mobile and web access, and a supportive community of fellow exam-takers. Our students consistently report higher confidence and pass rates above the national average.
Join Opterio today and get access to AI-powered practice questions, personalized study plans, and everything you need to become a certified contact lens specialist.