Overview
OCT Imaging is a non-invasive diagnostic procedure used to obtain high-resolution cross-sectional images of the retina. This examination provides detailed information about retinal structure and thickness.
OCT imaging is crucial for diagnosing and monitoring macular degeneration, diabetic retinopathy, glaucoma, and other retinal disorders. It provides quantitative measurements of retinal thickness and structure that cannot be obtained with other imaging methods.
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Indications
Evaluation of age-related macular degeneration
Assessment of diabetic macular edema
Evaluation of optic nerve and retinal nerve fiber layer
Assessment of various retinal diseases
Surgical planning for retinal procedures
Contraindications
Absolute Contraindications
Relative Contraindications
📋 Equipment Checklist
Check off items as you gather them:
Pre-procedure Preparation
Preparation includes explaining the procedure to patient, dilating pupils if needed, ensuring proper patient positioning, calibrating equipment, and preparing for potential complications. All team members should understand their roles.Step-by-Step Procedure
Step 1: Patient Preparation
Explain procedure to patient. Dilate pupils if needed. Position patient at OCT machine. Ensure proper head positioning.
⚠️ Common Mistakes to Avoid:
- Inadequate explanation
- Poor positioning
- Insufficient dilation
💡 Pro Tip:
Explain that the procedure is non-invasive and painless.
Step 2: Equipment Calibration
Calibrate OCT machine. Check fixation monitoring. Ensure proper function. Set appropriate scan protocols.
⚠️ Common Mistakes to Avoid:
- Skipping calibration
- Poor monitoring
- Equipment malfunction
💡 Pro Tip:
Always calibrate equipment before imaging.
Step 3: Scan Protocol Selection
Select appropriate scan protocol. Choose scan area and density. Set scan parameters.
⚠️ Common Mistakes to Avoid:
- Wrong protocol
- Inappropriate parameters
- Poor selection
💡 Pro Tip:
Use standard protocols for consistency and comparison.
Step 4: Image Acquisition
Acquire OCT images. Monitor patient fixation. Ensure image quality. Repeat if needed.
⚠️ Common Mistakes to Avoid:
- Poor image quality
- Inadequate fixation
- Missing scans
💡 Pro Tip:
Monitor fixation and image quality throughout acquisition.
Step 5: Image Analysis
Analyze OCT images. Measure retinal thickness. Assess retinal layers. Note any abnormalities.
⚠️ Common Mistakes to Avoid:
- Poor analysis
- Missing measurements
- Incomplete assessment
💡 Pro Tip:
Use automated analysis tools for consistency.
Step 6: Documentation
Record OCT findings. Document measurements. Compare with previous examinations.
⚠️ Common Mistakes to Avoid:
- Poor documentation
- Missing comparison
- Incomplete records
💡 Pro Tip:
Always compare with previous OCT scans when available.
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Post-procedure Care
Post-procedure care involves analyzing images, comparing with previous examinations, monitoring for complications, and determining if additional testing is needed. Regular OCT imaging is essential for patients with retinal diseases.Complications & Management
Complication | Incidence | Signs | Management | Prevention |
---|---|---|---|---|
Patient fatigue | Common | Poor fixation, decreased cooperation | Break, encouragement, repeat if needed | Adequate breaks, encouragement |
Poor image quality | 10-20% | Blurry images, artifacts | Repeat imaging, better fixation | Good fixation, proper technique |
Equipment malfunction | Rare | Poor images, errors | Equipment check, repair | Regular maintenance, calibration |
Patient anxiety | 10-15% | Poor cooperation, anxiety | Reassurance, gentle approach | Good communication, explanation |
Clinical Pearls
Explain that the procedure is non-invasive and painless.
Always calibrate equipment before imaging.
Use standard protocols for consistency and comparison.
Monitor fixation and image quality throughout acquisition.
Use automated analysis tools for consistency.
Always compare with previous OCT scans when available.
Retinal thickness measurements are crucial for monitoring disease progression.