GP Insights: <br>Tailoring Astigmatism Correction in Ortho-k</br> - Summary - MDSpire

GP Insights: <br>Tailoring Astigmatism Correction in Ortho-k</br>

  • By

  • John Mark Jackson, OD, MS, FAAO

  • May 1, 2026

  • 3 min

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Objective:

To discuss advancements in orthokeratology (ortho-k) lens technology for correcting astigmatism.

Key Findings:
  • Toric ortho-k lenses are recommended when corneal elevation difference exceeds 30 µm.
  • Residual astigmatism can occur if corneal and refractive astigmatism are mismatched.
  • Under-correcting corneal cylinder can lead to better visual outcomes.
Interpretation:

Practitioners should consider the balance between corneal and refractive astigmatism when selecting ortho-k lenses to minimize residual astigmatism.

Limitations:
  • The study is based on a single case example, limiting generalizability.
  • Further research is needed to establish broader guidelines for astigmatism correction in ortho-k.
Conclusion:

Tailoring ortho-k lens design, including the use of spherical lenses or customized toricity, can enhance visual outcomes for patients with astigmatism.

Original Source(s)

GP Insights: <br>Tailoring Astigmatism Correction in Ortho-k</br>

  • by John Mark Jackson, OD, MS, FAAO

  • May 1, 2026

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