Analysis of Fundus Shape in Highly Myopic Eyes by Using Curvature Maps Constructed from Optical Coherence Tomography
Figure 2
Image of correspondence between fundus shape, curvature, and color.
A, An imaginary Bruch’s membrane line to exemplify the correspondence. The curvature of one point was measured using 3 sequential A-scans (500-µm apart) so that it represented local shape in the range of 1,000-µm (Local curvature). Five points are exemplified in this figure. B, Corresponding curvature [1/µm] and color image for each 5 point. Positive, negative, or zero value of the curvature κ represents upward concave, downward convex, or flat, respectively. The color of curvature map showed a gradient from green (RGB(0, 192, 32)) to yellow (RGB(255, 255, 0)) as a local curvature value changes from 0.0005 to 0.0, and a gradient from red (RGB(255, 0, 0)) to yellow (RGB(255, 255, 0)) as a local curvature value changes from −0.0005 to 0.0.