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Proceedings Paper

Wavefront conjugated ray tracing aberrometry
Author(s): Vasyl Molebny
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Paper Abstract

In aberrometry, optical system of an eye plays a twofold role - as an object of measurement and as a part of aberrometer. It means that the aberrations to be measured are themselves the source of measurement errors. Simulation with ZEMAX demonstrated error dependencies for all Zernike components having an axial asymmetry. To compensate for the induced errors, the ray tracing procedure is proposed to be modified in a way to individually tilt the probing beam in each point where it enters the eye and to make it to cross the visual axis on the retina. One iteration makes the error less by about one order. Optical layout is proposed containing two sets of two-coordinate acousto-optic deflectors, the first one changing the height of the beam and the second one directing the laser beam into the same point that was designated in the initial measurement.

Paper Details

Date Published: 12 February 2011
PDF: 9 pages
Proc. SPIE 7885, Ophthalmic Technologies XXI, 788520 (12 February 2011); doi: 10.1117/12.875495
Show Author Affiliations
Vasyl Molebny, Institute of Biomedical Engineering (Ukraine)


Published in SPIE Proceedings Vol. 7885:
Ophthalmic Technologies XXI
Fabrice Manns; Per G. Söderberg; Arthur Ho, Editor(s)

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