Learning Center

Browse through our list of topics and get some answers to your questions around contact lenses, eye wear and vision care terms, eye wear product ingredients and eye care specific abbreviations.

  1. An Overview of Silicone Hydrogel Contact Lenses
  2. Are there contact lenses for dry eyes?
  3. Contact Lens Base Curve (BC) and Diameter (DIA)
  4. Contact Lens Wetting Agents
  5. How to get your contact lenses fitted
  6. Hyaluronan in Lens Cleaning Solutions
  7. Lens Comparison by Breathability and Water Content
  8. Pros and Cons of Soft Contact Lenses
  9. What are low- and high-water-content contact lenses?
  10. What are the advantages of contact lenses?
  11. What does OS and OD mean?
  12. What is 20/20 vision?
  13. What is a visibility tint?
  14. What is center thickness (CT)?
  15. What is Dk and Dk/t in contact lenses?
  16. What is Hypochlorous Acid (HOCl)?
  17. What is lens modulus?
  18. What is Meibomian Gland Dysfunction (MGD)
  19. What to know about a contact lens prescription
  20. What's in Contact Lenses, Cleaning Solutions and Eye Drops?
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