Free CLRE Exam Prep
Contact Lens Registry Examination (CLRE)
Pass your CLRE exam without spending hundreds on expensive prep courses. Free study guides, practice questions, flashcards, and related exam resources.
Quick Facts
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CLRE ABO-NCLE Optician Certifications License: Complete Roadmap
Follow this path to maximize your chances of passing on the first try
Master Ocular Anatomy & Optics (Domains I-II)You are here
Build foundational knowledge of corneal anatomy, tear film, refractive errors, and contact lens optics. These domains form the basis for all clinical content.
Learn Instrumentation & Pre-Fitting (Domains III-IV)
Study keratometry, slit lamp technique, corneal topography, lens material properties (Dk, modulus), and patient assessment protocols.
Practice Diagnostic Fitting & Dispensing (Domains V-VI)
Master fluorescein patterns, soft/toric/multifocal fitting, lens care systems, wearing schedules, and patient education. Domain VI is 20% of the exam.
Review Follow-Up & Regulations, Then Take Practice Exams
Study complications, follow-up protocols, FDA regulations, HIPAA, and coding. Then take timed practice exams to build exam-day confidence.
Can You Take the CLRE Exam?
Check if you meet the basic eligibility requirements
- •Must be at least 18 years old
- •Register and pay $225 exam fee through ABO-NCLE website
- •Schedule exam at Prometric Testing Center or via remote proctoring
- •Bring government-issued photo ID matching registration name exactly
- •Renewal required every 3 years with continuing education credits
CLRE Quick Facts
Time to Get Licensed
8-12 weeks for most candidates
From start to license in hand
Exam Provider
Prometric Testing Centers or ProProctor remote proctoring
Retake Policy
14-day wait after each failure; 3 attempts, then 90-day mandatory waiting period before re-eligibility
Total Cost Breakdown
Free CLRE Prep That Actually Works
The official pass rate is Not publicly reported. Our students do better.
100 Practice Questions
Covers all 8 CLRE domains with detailed answer explanations
AI-Powered Hints
Get contextual hints and wrong-answer explanations powered by AI
Updated for 2026
Reflects current ABO-NCLE exam handbook and test specifications
100% Free
All 100 practice questions are free — no account required
What You'll Study
17 chapters covering everything you need to pass
Introduction & Exam Overview
2 sections
Ocular Anatomy: Adnexa
3 sections
Ocular Anatomy: Anterior & Posterior Segment
3 sections
Refractive Errors & Contact Lens Optics
3 sections
Measurement Instrumentation
3 sections
Observation & Verification Instrumentation
3 sections
Prefitting Patient Evaluation
4 sections
Lens Materials, Design & Parameter Selection
4 sections
Diagnostic Fitting Procedures
3 sections
Fit Evaluation & Over-Refraction
3 sections
Dispensing: Wearing Schedules & Replacement
3 sections
Dispensing: Lens Care Systems
4 sections
Dispensing: Handling & Hygiene
4 sections
Follow-Up: Subjective & Objective Findings
4 sections
Follow-Up: Staining Patterns & Complications
4 sections
Follow-Up: Management Protocols
3 sections
Regulatory & Administrative
3 sections
CLRE Exam Details
Contact Lens Registry Examination (CLRE)
Administered by ABO-NCLE
Exam Content Breakdown
Based on the official ABO-NCLE content outline
Eye structure related to contact lens wear — tear film, cornea, conjunctiva, lid anatomy, and common ocular conditions
Refractive errors, vertex distance compensation, tear lens optics, and contact lens power calculations
Keratometry, biomicroscopy, corneal topography, and tear film assessment techniques
Patient assessment, contraindications, lens material selection (Dk, modulus, water content), and lens type determination
Fluorescein pattern evaluation, soft lens assessment, toric and multifocal fitting, over-refraction, and specialty fitting
Wearing schedules, care solutions, patient education, lens verification, and insertion/removal training
Complication identification and management — GPC, neovascularization, keratitis, staining, and post-wear evaluation
FDA device regulations, HIPAA, Contact Lens Rule, CPT coding, record keeping, and universal precautions
What's Included
17 Chapters
Complete exam coverage
Practice Quizzes
With detailed explanations
Free to Start
No credit card required
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What's Next After the CLRE?
After passing the CLRE, you can pursue these career paths
NCLEP
NCLE Practical Exam — computer-simulated skills assessment for licensed contact lens technicians
NCLE-AC
Advanced NCLE Certification for specialty and complex contact lens fitting
NOCE
National Opticianry Competency Exam (ABO) for spectacle dispensing certification
CLRE Exam FAQ
Official ABO-NCLE Resources
Verify information with these official sources
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