Overview
Corneal Topography is a diagnostic procedure used to map the surface curvature of the cornea. It is essential for diagnosing keratoconus, planning refractive surgery, and fitting contact lenses.
Corneal topography is crucial for detecting corneal irregularities, monitoring keratoconus progression, and planning surgical interventions.
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Indications
Diagnosis and monitoring
Pre-operative assessment
Assessment and management
Custom lens design
Detection and monitoring
Contraindications
Absolute Contraindications
Relative Contraindications
📋 Equipment Checklist
Check off items as you gather them:
Pre-procedure Preparation
Preparation includes explaining the procedure to patient, ensuring proper positioning, and calibrating the topographer.Step-by-Step Procedure
Step 1: Patient Preparation
Explain procedure, position patient, calibrate topographer.
⚠️ Common Mistakes to Avoid:
- Inadequate explanation
- Poor positioning
💡 Pro Tip:
Explain that the test is non-contact.
Step 2: Image Acquisition
Acquire corneal maps, ensure good fixation.
⚠️ Common Mistakes to Avoid:
- Poor fixation
- Blinking
💡 Pro Tip:
Instruct patient to blink before scan.
Step 3: Map Review
Review maps for quality and completeness.
⚠️ Common Mistakes to Avoid:
- Poor review
💡 Pro Tip:
Repeat if needed.
Step 4: Documentation
Document findings and compare with previous.
⚠️ Common Mistakes to Avoid:
- Poor documentation
💡 Pro Tip:
Always compare with previous maps.
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Post-procedure Care
Post-procedure care involves reviewing maps, documenting findings, and comparing with previous studies.Complications & Management
| Complication | Incidence | Signs | Management | Prevention |
|---|---|---|---|---|
| Poor image quality | 5-10% | Blurry maps | Repeat scan | Good fixation |
| Patient anxiety | Common | Poor cooperation | Reassurance | Good explanation |
Clinical Pearls
Explain that the test is non-contact.
Instruct patient to blink before scan.
Repeat if needed for quality.
Always compare with previous maps.
Document all findings carefully.