Characterization of Soft Contact Lens Fitting Using Ultra-Long Scan Depth Optical Coherence Tomography

Figure 1

Evaluation of the Define lens centration using UL-OCT images. (a) Horizontal meridian. (b) Vertical meridian. The nasal (blue dot)/temporal (green dot)/inferior (blue dot)/superior (green dot) boundaries of the inner painted pupil/iris in lenses were indicated. The perpendicular distances between those four points and the corneal apex (red dashed lines) were marked as “A,” “B,” “C,” and “D.” The difference between “A” and “B” was defined as the decentration at the horizontal meridian (a). The difference between “C” and “D” was defined as the decentration at the vertical meridian (b). The bars indicate 500 μm.

(a)

(b)