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Updated: Jun 19, 2026
Corneal Confocal Microscopy: A Novel Non-invasive Technique to Quantify Small Fibre Pathology in Peripheral Neuropathies
Published on: January 3, 2011
Keratoconus detection using corneal topography
1Baylor College of Medicine, Houston, TX, USA. holladay@docholladay.com
Unlabelled:
PURPOSETo review the topographic patterns associated with keratoconus suspects and provide criteria for keratoconus screening.
Methods:
Case study using maps from the NIDEK OPD-Scan II and OPD Station to highlight patterns seen in keratoconic corneas.
Results:
Five criteria are listed for the detection of keratoconus: 1) apex of the cone is not centered at the 6-o'clock semi-meridian, 2) cone should appear round on the tangential map, 3) keratometry >45.00 diopters, 4) corneal thickness at the apex of the cone is approximately 30 microm thinner than the corresponding distance above the pupil center, and 5) topographic patterns are not symmetric.
Conclusions:
Standard corneal topography maps and simple clinical evaluation criteria are fundamental to detect keratoconus suspects and keratoconus.
