Important Notice

Please review these guidelines carefully before proceeding with the marking procedure. Accurate axis marking is crucial for optimal toric IOL placement and surgical outcomes.

Reference Diagram

Eye Marking Reference

Anatomical reference points and marking guidelines

Step-by-Step Marking Procedure

1

Patient Positioning

  • Ensure patient is seated upright with head level
  • Verify natural head position without tilt
  • Patient should fix gaze on distant target at eye level
2

Reference Point Identification

  • Locate and mark the 3 and 9 o'clock positions
  • Identify limbal landmarks for reference
3

Marking Technique

  • Use sterile marking pen or approved dye
  • Make precise, thin marks at reference points
  • Avoid excessive pressure during marking

Required Tools

Surgical Tools
  • Sterile Marker
  • Reference Card
  • Axis Guide
  • Measuring Device

Important Considerations

  • • Double-check all measurements before marking
  • • Document the procedure with photographs
  • • Verify marks are visible and accurate
  • • Consider cyclorotation effects
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