Methods for representing wavefront aberrations.
a) Raw data (don't laugh - see item e)
b) Wavefront height (yes, but how is it related to vision?).
c) Zernike polynomials (but why are they needed?).
d) Plot of slope (especially wonderful if in units of min).
e) Spider web plot (Howland's pretty representation of raw data).
f) Shape descriptors for specific anomalies. Keratoconus and Refractive surgery as examples.
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