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Ultrasonography in Ophthalmology 11 pp 47–50Cite as

A new instrument for axial length measurement

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Part of the book series: Documenta Ophthalmologica Proceedings Series ((DOPS,volume 51))

Summary

A simple and low-cost A-mode device for ocular biometry is described. The A-mode echogram is visible at a liquid crystal display for reference, whereas the intrinsic measuring accuracy is 0.01 mm. The sound velocity in the various ocular media can be adjusted independently. Averaging is automatically performed over 128 successive A-lines and after insertion of keratometric data the power of a lens implant is calculated with either of the four installed algorithms.

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References

  • Hoffer KJ. 1980. Biometry of 7,500 cataractous eyes. Am J Ophthalmol 90: 360–368.

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  • Jaffe NS. 1984. Cataract surgery and its complications, Mosby, St Louis.

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Author information

Authors and Affiliations

  1. Department of Ophthalmology, Miyazaki Medical College, 5200 Kihara, Kiyotake, Miyazaki, 889-16, Japan

    A. Sawada, H. Shibata, A. Yamamoto, A. Nakamura & S. Demizu

Authors
  1. A. Sawada
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  2. H. Shibata
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  3. A. Yamamoto
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  4. A. Nakamura
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  5. S. Demizu
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Editor information

Editors and Affiliations

  1. University Department of Ophthalmology, Nijmegen, Netherlands

    J. M. Thijssen (Scientific Secretary) (Scientific Secretary)

  2. University Department of Ophthalmology, Chieti, Italy

    P. E. Gallenga (President) (President)

  3. University Department of Ophthalmology, Napels, Italy

    G. Cennamo (Vice President) (Vice President)

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© 1988 Kluwer Academic Publishers

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Sawada, A., Shibata, H., Yamamoto, A., Nakamura, A., Demizu, S. (1988). A new instrument for axial length measurement. In: Thijssen, J.M., Hilman, J.S., Gallenga, P.E., Cennamo, G. (eds) Ultrasonography in Ophthalmology 11. Documenta Ophthalmologica Proceedings Series, vol 51. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1311-0_7

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  • DOI: https://doi.org/10.1007/978-94-009-1311-0_7

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-7083-6

  • Online ISBN: 978-94-009-1311-0

  • eBook Packages: Springer Book Archive

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