NCLE Bootcamp: Contact Lens Math
### Master the calculations behind contact lens fitting and prepare for the NCLE Certification Exam.
Contact lens math is essential for the National Contact Lens Examiners (NCLE) certification. This bootcamp covers the key calculations - from vertex distance and keratometry to base curves, tear lenses, and SAM/FAP - with step-by-step worked examples and practice problems tailored to the NCLE exam. Master vertex distance, keratometry, base curves, tear lenses, SAM/FAP, RGP calculations, and contact lens prescription math.
WHAT YOU'LL LEARN
Premium Member Training
Premium Members get access to the complete bootcamp, interactive practice, quizzes, progress tracking, and more. Some introductory lessons are available for free.
Course Lessons
Contact Lens Prescription Fundamentals
12 min
Plus and Minus Lens Power
10 min
Vertex Distance Fundamentals
12 min
Vertex Distance Calculations
14 min
Vertexing High Minus Prescriptions
13 min
Vertexing High Plus Prescriptions
13 min
Spherical Equivalent for Contact Lenses
11 min
Keratometry Basics
13 min
Calculating Corneal Astigmatism
11 min
Converting Diopters and Millimeters
13 min
Base Curve Relationships
12 min
SAM and FAP
12 min
Tear Lens Calculations
14 min
RGP Power Adjustments
14 min
Residual Astigmatism
13 min
Contact Lens Over-Refraction
12 min
Multifocal Contact Lens Math
13 min
Unofficial OpticalToolbelt educational resource. Not affiliated with, endorsed by, or sponsored by the American Board of Opticianry (ABO).