High-accuracy corneal topographer

Matthias Rottenkolber; Halina Podbielska M.D.

doi:10.1117/12.260649

11 December 1996 High-accuracy corneal topographer

Matthias Rottenkolber, Halina Podbielska M.D.

Proceedings Volume 2927, Optical and Imaging Techniques for Biomonitoring II; (1996) https://doi.org/10.1117/12.260649
Event: BiOS Europe '96, 1996, Vienna, Austria

Abstract

The constant progress in photorefractive surgery requires measurement devices with which the topography of the cornea can be measured with a high precision and bigger reproducibility than the currently used devices offer. The special two-path moire deflectometer is constructed for in vivo measurements. To overcome the problem associated with rapid eye movements, the special unit for measurement of the distance between the eye and the experimental setup, is designed. The achievable resolution of the proposed topographer is in the range of about 3 microns within a lateral measurement range of about 5 mm in diameter. The corresponding precision of the spherical equivalent dioptric number is thus better than 0.015 D.

Citation Download Citation

Matthias Rottenkolber and Halina Podbielska M.D. "High-accuracy corneal topographer", Proc. SPIE 2927, Optical and Imaging Techniques for Biomonitoring II, (11 December 1996); https://doi.org/10.1117/12.260649

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