Abstract

A method is described for measuring ametropia and voluntary accommodation response of the eye using laser speckle patterns. An explanation of the movement of laser speckle patterns is given based on geometrical optics. Results of refraction measurements at various wavelengths across the visible spectrum are given. Results of accommodation response measurements at various wavelengths across the visible spectrum are given.

© 1973 Optical Society of America

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References

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  1. H. A. Knoll, Arch. Am. Acad. Optom. 43, 7 (1966).
  2. W. R. Baldwin, W. B. Stover, Arch. Am. Acad. Optom. 45, 3 (1968).
    [CrossRef]
  3. H. E. Goodwin, J. V. Thompson, Optom. Wkly. (28December1969).
  4. E. Ingelstam, S. Ragnarsson, Vision Res. 12, 41 (1972).
    [CrossRef]
  5. D. C. Sinclair, J. Opt. Soc. Am. 55, 5 (1965).
    [CrossRef]
  6. V. W. Trendelenburg, Der Gesichtssinn (Springer-Verlog, Berlin, 1943), pp. 44โ€“45.
  7. I. M. Borish, Clinical Refraction (Professional Press, Chicago, 1970), p. 158.

1972 (1)

E. Ingelstam, S. Ragnarsson, Vision Res. 12, 41 (1972).
[CrossRef]

1969 (1)

H. E. Goodwin, J. V. Thompson, Optom. Wkly. (28December1969).

1968 (1)

W. R. Baldwin, W. B. Stover, Arch. Am. Acad. Optom. 45, 3 (1968).
[CrossRef]

1966 (1)

H. A. Knoll, Arch. Am. Acad. Optom. 43, 7 (1966).

1965 (1)

Baldwin, W. R.

W. R. Baldwin, W. B. Stover, Arch. Am. Acad. Optom. 45, 3 (1968).
[CrossRef]

Borish, I. M.

I. M. Borish, Clinical Refraction (Professional Press, Chicago, 1970), p. 158.

Goodwin, H. E.

H. E. Goodwin, J. V. Thompson, Optom. Wkly. (28December1969).

Ingelstam, E.

E. Ingelstam, S. Ragnarsson, Vision Res. 12, 41 (1972).
[CrossRef]

Knoll, H. A.

H. A. Knoll, Arch. Am. Acad. Optom. 43, 7 (1966).

Ragnarsson, S.

E. Ingelstam, S. Ragnarsson, Vision Res. 12, 41 (1972).
[CrossRef]

Sinclair, D. C.

Stover, W. B.

W. R. Baldwin, W. B. Stover, Arch. Am. Acad. Optom. 45, 3 (1968).
[CrossRef]

Thompson, J. V.

H. E. Goodwin, J. V. Thompson, Optom. Wkly. (28December1969).

Trendelenburg, V. W.

V. W. Trendelenburg, Der Gesichtssinn (Springer-Verlog, Berlin, 1943), pp. 44โ€“45.

Arch. Am. Acad. Optom. (2)

H. A. Knoll, Arch. Am. Acad. Optom. 43, 7 (1966).

W. R. Baldwin, W. B. Stover, Arch. Am. Acad. Optom. 45, 3 (1968).
[CrossRef]

J. Opt. Soc. Am. (1)

Optom. Wkly. (1)

H. E. Goodwin, J. V. Thompson, Optom. Wkly. (28December1969).

Vision Res. (1)

E. Ingelstam, S. Ragnarsson, Vision Res. 12, 41 (1972).
[CrossRef]

Other (2)

V. W. Trendelenburg, Der Gesichtssinn (Springer-Verlog, Berlin, 1943), pp. 44โ€“45.

I. M. Borish, Clinical Refraction (Professional Press, Chicago, 1970), p. 158.

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Figures (12)

Fig. 1
Fig. 1

Speckle ray penetrating the emmetropic eye. (a) Head in reference position; (b) head moved upward from reference position.

Fig. 2
Fig. 2

Speckle ray penetrating the myopic eye. (a) Head in reference position; (b) head moved upward from reference position.

Fig. 3
Fig. 3

Speckle ray penetrating the hyperopic eye. (a) Head in reference position; (b) head moved upward from reference position.

Fig. 4
Fig. 4

Laser speckle motion as one approaches the screen supporting the pattern.

Fig. 5
Fig. 5

Experimental arrangement for measuring ametropia.

Fig. 6
Fig. 6

Corrective power required by myopic subject for various wavelengths.

Fig. 7
Fig. 7

Corrective power required by hyperopic subject for various wavelengths.

Fig. 8
Fig. 8

Corrective power required by myopic subject for various wavelengths.

Fig. 9
Fig. 9

Accommodative response at various wavelengths for left eye of one subject.

Fig. 10
Fig. 10

Accommodative response at various wavelengths for same left eye as in Fig. 9 but measured 48 h later.

Fig. 11
Fig. 11

Accommodative response at various wavelengths for right eye of same subject as in Fig. 9.

Fig. 12
Fig. 12

Accommodative response at various wavelengths for same right eye as in Fig. 11 but measured 48 h later.

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