Abstract

We describe a new wavefront sensor for ocular aberration determination, based on the curvature sensing principle, which adapts the classical system used in astronomy for the living eye’s measurements. The actual experimental setup is presented and designed following a process guided by computer simulations to adjust the design parameters for optimal performance. We present results for artificial and real young eyes, compared with the Hartmann–Shack estimations. Both methods show a similar performance for these cases. This system will allow for the measurement of higher order aberrations than the currently used wavefront sensors in situations in which they are supposed to be significant, such as postsurgery eyes.

© 2006 Optical Society of America

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References

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2006

F. Diaz-Douton, A. Benito, J. Pujol, M. Arjona, J. L. Guell, and P. Artal, Invest. Ophthalmol. Visual Sci. 47, 1710 (2006).
[CrossRef]

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Arjona, M.

F. Diaz-Douton, A. Benito, J. Pujol, M. Arjona, J. L. Guell, and P. Artal, Invest. Ophthalmol. Visual Sci. 47, 1710 (2006).
[CrossRef]

Artal, P.

F. Diaz-Douton, A. Benito, J. Pujol, M. Arjona, J. L. Guell, and P. Artal, Invest. Ophthalmol. Visual Sci. 47, 1710 (2006).
[CrossRef]

P. M. Prieto, F. Vargas-Martin, S. Golez, and P. Artal, J. Opt. Soc. Am. A 17, 1388 (2000).
[CrossRef]

Benito, A.

F. Diaz-Douton, A. Benito, J. Pujol, M. Arjona, J. L. Guell, and P. Artal, Invest. Ophthalmol. Visual Sci. 47, 1710 (2006).
[CrossRef]

Bille, J. F.

Diaz-Douton, F.

F. Diaz-Douton, A. Benito, J. Pujol, M. Arjona, J. L. Guell, and P. Artal, Invest. Ophthalmol. Visual Sci. 47, 1710 (2006).
[CrossRef]

Goelz, S.

Golez, S.

Grimm, B.

Gruppetta, S.

Guell, J. L.

F. Diaz-Douton, A. Benito, J. Pujol, M. Arjona, J. L. Guell, and P. Artal, Invest. Ophthalmol. Visual Sci. 47, 1710 (2006).
[CrossRef]

Koechlin, L.

Lacombe, F.

Liang, J.

Moreno-Barriuso, E.

Navarro, R.

Prieto, P. M.

Puget, P.

Pujol, J.

F. Diaz-Douton, A. Benito, J. Pujol, M. Arjona, J. L. Guell, and P. Artal, Invest. Ophthalmol. Visual Sci. 47, 1710 (2006).
[CrossRef]

Roddier, C.

Roddier, F.

Vargas-Martin, F.

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Figures (4)

Fig. 1
Fig. 1

Scheme of the algorithm used for wavefront retrieval from the captured images.

Fig. 2
Fig. 2

Experimental setup.

Fig. 3
Fig. 3

Results obtained for different trial lenses: (a) spherical lenses ( 4 mm pupil), and (b) cylindrical lenses ( 5 mm pupil). Examples of the sensor signals (S) for each case are shown on the left-hand side. The correlation between our results and the nominal value of the lenses is shown on the right-hand side.

Fig. 4
Fig. 4

Wavefront estimations from H–S (left) and curvature (right) sensors for (a) low aberrated eye, (b) more aberrated eye.

Equations (2)

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k d d z I ( r , z ) = [ I ( r , z ) φ ( r , z ) ] ,
I 1 I 2 I 1 + I 2 = Δ z k [ 2 φ ( r , z 0 ) + δ ( e ) d d n φ ( r , z 0 ) ] .

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