The cornea is the front surface of the eye. Corneal specialists use a TMS, or Topo graphical Modeling System, to produce a “map” of the curvature of the eye’s surface. A computer analyzes light reflected off the eye and draws level curves joining points of constant curvature. The regions between these curves are colored different colors. The first two pictures in Figure 8.38 are cross sections of eyes with constant curvature, the smaller being about 38 units and the larger about 50 units. For contrast, the third eye has varying curvature.
(a) Describe in words how the TMS map of an eye of constant curvature will look.
(b) Draw the TMS map of an eye with the cross section in Figure 8.39. Assume the eye is circular when viewed from the front, and the cross-section is the same in every direction. Put reasonable numeric labels on your level curves.

Transcribed Image Text:

Large curvature Small curvature ZA Figure 8.39 Small (or zero) curvature Large curvature Figure 8.38: Pictures of eyes with different curvature