Epithelial thickness mapping measures the thickness of the cornea’s outer skin layer across the entire surface.
How epithelial mapping is performed
Using advanced scans such as OCT or specialised topography, the device builds a colour map. This shows where the epithelium is thinner or thicker, often in great detail.
- The scan is painless and takes only a few seconds per eye
- No contact is made with the eye and usually no drops are needed
- You simply look at a target while the machine captures images
- The test can be repeated safely whenever needed
Why epithelial mapping is useful
Changes in thickness can reveal early keratoconus or other corneal problems. It also guides planning for laser eye surgery and helps monitor healing after procedures.
- Identifies subtle irregularities not visible on standard examination
- Supports decisions about suitability and safety of refractive surgery
- Helps explain unexplained blur or ghosting of images
- Allows precise follow-up of corneal disease progression
