Wave aberration description

• Purpose of S-H-S aberrometer is to measure the wave aberration function of the eye’s optical system.

• Same as the shape of the wavefront of light reflected out of the eye from a point source on the fundus.

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Now, to say the same thing again in the language of wave optics,

the purpose of the Scheiner-Hartmann-Shack aberrometer is to measure the wave aberration function of the eye’s optical system

which is the same as saying the purpose is to measure the shape of the wavefront of light that is reflected out of the eye from a point source on the fundus.