Abstract

Customized contact lenses are limited in their correction performance, especially on irregular corneas, owing to decentration and rotation of the lenses. To overcome this limitation, we proposed to customize the back surface of soft contact lenses to match the anterior irregular corneal surface. These lenses were designed to correct anterior corneal aberrations and to improve lens stability. Although in keratoconic eyes the anterior corneal aberrations were effectively corrected, significant residual aberrations were observed. The internal optics, especially the posterior surface of the cornea, was the main source of these residual aberrations. Compared with conventional soft contact lenses, lens stability, on average over three eyes, was improved by a factor of 2 for horizontal and vertical decentrations and a factor of 5 in rotational orientation with the back-surface customized lenses.

© 2007 Optical Society of America

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References

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2007

R. Sabesan, T. M. Jeong, L. Carvalho, I. G. Cox, D. R. Williams, and G. Yoon, Opt. Lett. 32, 1000 (2007).
[CrossRef] [PubMed]

K. Negishi, T. Kumanomido, M. Saiki, Y. Utsumi, and K. Tsubota, 2007, ARVO Annual Meeting abstract 2779 (ARVO, 2007).

2005

2003

N. Lopez-Gil, N. Chateau, J. F. Castejon-Mochom, P. Artal, and A. Benito, S. Afr. Optom. 62, 173 (2003).

2002

L. N. Thibos, R. A. Applegate, J. T. Schwiegerling, R. Webb, and VISA Standards Taskforce Members, J. Refract. Surg. 18, 652 (2002).

G. Yoon and D. R. Williams, J. Opt. Soc. Am. A 19, 266 (2002).
[CrossRef]

A. Guirao, J. Porter, D. R. Williams, and I. G. Cox, J. Opt. Soc. Am. A 19, 620 (2002).
[CrossRef]

2001

A. Guirao, D. R. Williams, and I. G. Cox, J. Opt. Soc. Am. A 18, 1003 (2001).
[CrossRef]

P. Artal, A. Guirao, E. Berrio, and D. R. Williams, J. Vision 1, 1 (2001).
[CrossRef]

1999

T. Jitsuno, K. Tokumura, N. Nakashima, and M. Nakatsuka, Appl. Phys. Lett. 38, 3338 (1999).
[CrossRef]

1996

K. Zadnik, M. O. Gordon, J. T. Barr, T. B. Edrington, and Collaborative longitudinal evaluation of keratoconus (CLEK) study group, Cornea 15, 139 (1996).
[CrossRef] [PubMed]

Applegate, R. A.

L. N. Thibos, R. A. Applegate, J. T. Schwiegerling, R. Webb, and VISA Standards Taskforce Members, J. Refract. Surg. 18, 652 (2002).

Artal, P.

N. Lopez-Gil, N. Chateau, J. F. Castejon-Mochom, P. Artal, and A. Benito, S. Afr. Optom. 62, 173 (2003).

P. Artal, A. Guirao, E. Berrio, and D. R. Williams, J. Vision 1, 1 (2001).
[CrossRef]

Barr, J. T.

K. Zadnik, M. O. Gordon, J. T. Barr, T. B. Edrington, and Collaborative longitudinal evaluation of keratoconus (CLEK) study group, Cornea 15, 139 (1996).
[CrossRef] [PubMed]

Benito, A.

N. Lopez-Gil, N. Chateau, J. F. Castejon-Mochom, P. Artal, and A. Benito, S. Afr. Optom. 62, 173 (2003).

Berrio, E.

P. Artal, A. Guirao, E. Berrio, and D. R. Williams, J. Vision 1, 1 (2001).
[CrossRef]

Carvalho, L.

Castejon-Mochom, J. F.

N. Lopez-Gil, N. Chateau, J. F. Castejon-Mochom, P. Artal, and A. Benito, S. Afr. Optom. 62, 173 (2003).

Chateau, N.

N. Lopez-Gil, N. Chateau, J. F. Castejon-Mochom, P. Artal, and A. Benito, S. Afr. Optom. 62, 173 (2003).

Cox, I. G.

Edrington, T. B.

K. Zadnik, M. O. Gordon, J. T. Barr, T. B. Edrington, and Collaborative longitudinal evaluation of keratoconus (CLEK) study group, Cornea 15, 139 (1996).
[CrossRef] [PubMed]

Gordon, M. O.

K. Zadnik, M. O. Gordon, J. T. Barr, T. B. Edrington, and Collaborative longitudinal evaluation of keratoconus (CLEK) study group, Cornea 15, 139 (1996).
[CrossRef] [PubMed]

Guirao, A.

Jeong, T. M.

Jitsuno, T.

T. Jitsuno, K. Tokumura, N. Nakashima, and M. Nakatsuka, Appl. Phys. Lett. 38, 3338 (1999).
[CrossRef]

Kumanomido, T.

K. Negishi, T. Kumanomido, M. Saiki, Y. Utsumi, and K. Tsubota, 2007, ARVO Annual Meeting abstract 2779 (ARVO, 2007).

Lopez-Gil, N.

N. Lopez-Gil, N. Chateau, J. F. Castejon-Mochom, P. Artal, and A. Benito, S. Afr. Optom. 62, 173 (2003).

Menon, M.

Nakashima, N.

T. Jitsuno, K. Tokumura, N. Nakashima, and M. Nakatsuka, Appl. Phys. Lett. 38, 3338 (1999).
[CrossRef]

Nakatsuka, M.

T. Jitsuno, K. Tokumura, N. Nakashima, and M. Nakatsuka, Appl. Phys. Lett. 38, 3338 (1999).
[CrossRef]

Negishi, K.

K. Negishi, T. Kumanomido, M. Saiki, Y. Utsumi, and K. Tsubota, 2007, ARVO Annual Meeting abstract 2779 (ARVO, 2007).

Porter, J.

Sabesan, R.

Saiki, M.

K. Negishi, T. Kumanomido, M. Saiki, Y. Utsumi, and K. Tsubota, 2007, ARVO Annual Meeting abstract 2779 (ARVO, 2007).

Schwiegerling, J. T.

L. N. Thibos, R. A. Applegate, J. T. Schwiegerling, R. Webb, and VISA Standards Taskforce Members, J. Refract. Surg. 18, 652 (2002).

Thibos, L. N.

L. N. Thibos, R. A. Applegate, J. T. Schwiegerling, R. Webb, and VISA Standards Taskforce Members, J. Refract. Surg. 18, 652 (2002).

Tokumura, K.

T. Jitsuno, K. Tokumura, N. Nakashima, and M. Nakatsuka, Appl. Phys. Lett. 38, 3338 (1999).
[CrossRef]

Tsubota, K.

K. Negishi, T. Kumanomido, M. Saiki, Y. Utsumi, and K. Tsubota, 2007, ARVO Annual Meeting abstract 2779 (ARVO, 2007).

Utsumi, Y.

K. Negishi, T. Kumanomido, M. Saiki, Y. Utsumi, and K. Tsubota, 2007, ARVO Annual Meeting abstract 2779 (ARVO, 2007).

Webb, R.

L. N. Thibos, R. A. Applegate, J. T. Schwiegerling, R. Webb, and VISA Standards Taskforce Members, J. Refract. Surg. 18, 652 (2002).

Williams, D. R.

Yoon, G.

Zadnik, K.

K. Zadnik, M. O. Gordon, J. T. Barr, T. B. Edrington, and Collaborative longitudinal evaluation of keratoconus (CLEK) study group, Cornea 15, 139 (1996).
[CrossRef] [PubMed]

Appl. Opt.

Appl. Phys. Lett.

T. Jitsuno, K. Tokumura, N. Nakashima, and M. Nakatsuka, Appl. Phys. Lett. 38, 3338 (1999).
[CrossRef]

Cornea

K. Zadnik, M. O. Gordon, J. T. Barr, T. B. Edrington, and Collaborative longitudinal evaluation of keratoconus (CLEK) study group, Cornea 15, 139 (1996).
[CrossRef] [PubMed]

J. Opt. Soc. Am. A

J. Refract. Surg.

L. N. Thibos, R. A. Applegate, J. T. Schwiegerling, R. Webb, and VISA Standards Taskforce Members, J. Refract. Surg. 18, 652 (2002).

J. Vision

P. Artal, A. Guirao, E. Berrio, and D. R. Williams, J. Vision 1, 1 (2001).
[CrossRef]

Opt. Lett.

S. Afr. Optom.

N. Lopez-Gil, N. Chateau, J. F. Castejon-Mochom, P. Artal, and A. Benito, S. Afr. Optom. 62, 173 (2003).

Other

K. Negishi, T. Kumanomido, M. Saiki, Y. Utsumi, and K. Tsubota, 2007, ARVO Annual Meeting abstract 2779 (ARVO, 2007).

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Figures (3)

Fig. 1
Fig. 1

Schematic principle and manufacturing process of the back-surface CSCL. Note that the back surface of a conventional soft contact lens was flipped over for ablation.

Fig. 2
Fig. 2

Designed and achieved (manufactured) wavefront aberrations of back-surface CSCL for subject BT for a 5 mm pupil. The interval between contours is 1 μ m .

Fig. 3
Fig. 3

Measured wavefront aberrations of naked eyes, eyes wearing back-surface CSCL, and calculated internal optics aberration for subjects BT and SC over a 5 mm pupil. Error bars represent ± 1 standard deviation.

Tables (1)

Tables Icon

Table 1 Stability (Standard Deviation) of Decentration in x and y Directions and Rotation of Conventional Soft Contact Lens and Back-Surface CSCL for Subjects BT, SC, and MB a

Metrics