August is almost here!. Are you prepared for your ABO Exam? This is a good summary of what you should know going in to your NOCE test.

Preparing for your NOCE

Make sure you know your Math!

  • Prentice’s Law
  • Minimum Blank Size
  • Image Jump
  • Slab Off
  • Focal Length
  • Prism Conversion
  • Vertex Distance Conversion
  • Nominal Power
  • Power in Any Meridian
  • Metric Conversion

Make sure you know your tools!

  • Lensometer
  • Lens Clock
  • Shop Protractor
  • Hand tools
  • Calibration

Make sure you know your frames!

  • Frame parts
  • Plastic Frame Materials
  • Metal Frame Materials
  • Boxing System
  • Decentration and Seg Drop Calculation
  • Bench Alignment
  • Frame Adjusting
  • Frame Repair
  • Frame Selection

Make sure you know your lenses!

  • Lens Materials
  • Lens Characteristics
  • Abbe Value
  • Aberrations
  • Light Transmission Values
  • Index of Refraction
  • Multifocal Types
  • Measuring Multifocals
  • Sun lenses
  • Safety lenses
  • Base Curves
  • Corrected Curve Theory
  • Iseikonic Lenses
  • Lens Coatings

Make sure you know your regulations and tolerances!

  • Power Tolerances
  • Cylinder Tolerances
  • Axis Tolerances
  • Prism Tolerances
  • Base Curve Tolerances
  • Safety Tolerances
  • Rx Legalities

Make sure you know your eye anatomy and your optical theory!

  • Parts of the Eye
  • Refractive Errors
  • Non-refractive Errors
  • Diseases of the Eye
  • Geometric Optics
  • Light Theory
  • Color Perception
  • Optical Cross
  • Toric Cross
  • Plus and Minus Axis

Practice Tests Can Help You Prepare

The practice exams here at are unlimited. There are THOUSANDS of questions in our database and every test you take will be unique. You’ll get a wide variety of questions of all levels of difficulty. You may get similar questions, but you’ll rarely get the same question twice!

What you will get is the answers to any of the questions that you missed, and explanations for those answers. If you get one of our questions wrong, you’ll learn from it. We even do the math out for you!

In fact, due to customer feedback, we have expanded our explanations function. Now, when you take our tests, you can view explanations for ALL your questions, even the ones you got right. This means that you can learn even more from every question. We want you to ACE your Certification Exam!

Keep on studying. And let us help you Pass Your Optical Boards!