Wavefront curvature sensing for the human eye

Abstract

In this paper we present a curvature wavefront sensor for the eye. The layout proposed is novel, whilst the algorithm used has been adapted from previously published work [Roddier, F.; Roddier, C. Appl. Opt. 1991, 30, 1325–1327]. The design of the set-up incorporates two field lenses that, together with a beam separator, define the distance Δz between the two sampled planes. We present a feasibility study to use this particular combination of optical configuration and retrieval algorithm in the eye. We present calibration curves and results from three real eyes.

Keywords:

• aberrometry
• wavefront
• sensing
• curvature
• eye
• measurements

Acknowledgements

C. Torti was funded by an internal PhD studentship from City University. Additionally this work was partially funded by the National University of Ireland, Galway, sub-contracted to SHARP-EYE FP6 Research Training Network, Contract EC FP-5 HPRN-CT-2002-00301 and by EPSRC, UK Grant GR/S58812/01(P). The authors would like to thank Dr Salvador X. Bará for providing the phase plate and Brice Thurin from City University for very useful discussions during the undertaking of this work.