Hartmann test modification for measuring ophthalmic progressive lenses

Year: 1994

Authors: Castellini C., Francini F., Tiribilli B.

Autors Affiliation: Istituto Nazionale di Ottica, Largo E. Fermi 6, Firenze 50125, Italy

Abstract: We describe a modified verion of the Hartmann test in which the pattern of the holes is replaced with a circular scanning laser beam. A position-sensitive detector is used to acquire the coordinates of the deflected beam. Significant data are obtained when the Fourier transform of the detector output signals is considered. Application of this test method to the mapping of optical parameters of ophthalmic progressive addition lenses is presented. Prismatic deviation, spherical power, and astigmatism are measured with appropriate accuracy.

Journal/Review: APPLIED OPTICS (2004)

Volume: 33 (19)      Pages from: 4120  to: 4124

KeyWords: Numerical analysis; Ophthalmology; Testing; Vision aids, Hartman test; Ophthalmic progressive lenses, Lenses
DOI: 10.1364/AO.33.004120

Citations: 36
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