A 76-year-old presents with corneal topographical changes. What does this corneal topography show?
Analysis
In this image there are irregularities to the placido mires. In particular from the 10:00 to 1:00 area, the discs are curved and irregular. This pattern is suggestive of surface irregularities. Corneal topography is used to assess the pattern of astigmatism (for planning of IOL type lenses, including toric lenses) and to look for irregular patterns of astigmatism suggestive of surface disorders.
In this 16-minute video with Dr. Beeran Meghpara you will learn about:
- Which instruments help with preoperative lens and surgical planning
- Concerning patterns on topography, and
- Commonly used intraocular lenses
Cornea Coach Tip
Patients who wear contact lenses should stop their use prior to receiving keratometry for IOL planning. Soft contact lenses should be stopped for 1-2 weeks; rigid gas permeable contact lenses should be stopped for 1 month for every decade of use.
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