Orthokeratology Today: <br>Troubleshooting the Ortho-k Fit: Clinical Detective Work</br>
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By
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CHERYL CHAPMAN, OD, FIAOMC, FAAO, DIPL ABO
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September 1, 2026
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Clinical Scorecard: Orthokeratology Today: Troubleshooting the Ortho-k Fit: Clinical Detective Work
At a Glance
| Category | Detail |
|---|
| Condition | Orthokeratology |
| Key Mechanisms | Systematic troubleshooting of lens fit based on topography maps, visual acuity, and patient comfort. |
| Target Population | Patients undergoing orthokeratology for myopia control. |
| Care Setting | Optometry clinics specializing in contact lens fitting. |
Key Highlights
- Correlate subjective symptoms with axial and tangential difference maps for troubleshooting.
- Smaller treatment zones can enhance myopia control but may cause glare and halos.
- Central islands indicate excessive sagittal depth; reducing it can improve vision.
- Inferior decentration suggests a lens that is too steep; adjustments can improve fit.
- Not all lens maps require redesign; observe if the patient is comfortable and sees well.
Guideline-Based Recommendations
Diagnosis
- Use topography maps to assess lens fit and patient symptoms.
Management
- Adjust treatment target rather than rebuilding the lens if refractive target is off.
Monitoring & Follow-up
- Allow cornea to respond to consistent wear before making nonurgent adjustments.
Risks
- Excessive sagittal depth can lead to poor vision and discomfort.
Patient & Prescribing Data
Individuals with myopia seeking orthokeratology treatment.
Adjustments to lens design should be made based on specific fitting issues rather than a complete redesign.
Clinical Best Practices
- Increase treatment zone size to alleviate glare and halos.
- Monitor for central islands and adjust sagittal depth as needed.
- Evaluate lens centration and adjust sagittal depth to improve comfort.
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