Scheimpflug imaging uses a rotating camera and slit beam arranged according to the Scheimpflug principle to capture cross-sectional images of the anterior eye. It is widely employed in corneal and anterior segment tomography.
Technique
The system acquires multiple radial sections through the cornea and anterior chamber, reconstructing a three-dimensional model. It measures curvature, elevation, pachymetry, and lens position.
- Non-contact and rapid, suitable for routine clinical use
- Provides detailed pachymetry maps and posterior corneal data
- Calculates anterior chamber depth and volume
- Can analyse lens densitometry and position
Clinical Applications
Scheimpflug imaging aids in screening for keratoconus, planning refractive surgery, assessing corneal grafts, and evaluating angle configuration. It also contributes to IOL power calculations and intraocular lens analysis.
- Enhanced detection of early ectasia via combined indices
- Useful in monitoring progression and response to cross-linking
- Helps distinguish true corneal changes from tear-film artefacts
- Data should be interpreted alongside other clinical tests
