The ABO Practice Quizzes are designed to allow you to practice ABO concepts a little every day. To get the best results, we recommend taking one quiz per day for 30 days. A little practice every day is better than a lot of practice all at once!

You’ll receive downloadable support materials:

  • ABO Formula Quick Reference Sheet
  • ANSI Quick Reference Grid
  • Ocular Anatomy Packet
  • Vocabulary Packet
  • Opticianry Tools Packet

Each quiz has about 20 questions. The topics covered on the quizzes are:

  • Ocular anatomy
  • Refractive errors
  • Characteristics of plus and minus lenses
  • Decentration
  • Minimum blank size
  • Transposition
  • Vertex distance compensation.
  • Light theory
  • Index of refraction
  • ABBE value
  • Vocabulary
  • Prentice rule
  • Spherical equivalent
  • Base curve selection.
  • Astigmatism
  • ANSI standards
  • Focal length
  • Calculating effective power in given meridians
  • Calculating induced prism in compound lenses
  • Optical cross.

You will be emailed links to the quizzes and materials after purchase. Access to the ABO Practice Quizzes and materials lasts for 3 months.