5 Key Takeaways

• 1

  Scleral lenses should not contact the limbus to avoid mechanical insults to epithelial cells, not to protect corneal stem cells.

• 2

  Corneal stem cells are located deep within the limbal area and are shielded from scleral lens pressure by surrounding structures.

• 3

  Mechanical contact with the limbus can lead to fluid accumulation and neovascularization, which is the primary concern for fitters.

• 4

  Factors like chemical burns, chronic inflammation, and long-term contact lens use can harm corneal stem cells more than scleral lens wear.

• 5

  It is important to question outdated concepts and rely on evidence-based explanations regarding scleral lens fitting.