Visual Performance Through the Aspheral Lens

Authors

  • G.C. Woo
  • D. Otto

DOI:

https://doi.org/10.65636/cjo.v50i4.6983

Keywords:

visual performance, Aspheral lens

Abstract

In this study, a comparison of visual performance through the central parts of the Aspheral and convemional ophthalmic lenses was made using visual acuity and contrast sensitivity as indices of performance. The results of our investigation indicate that the Aspheral lens with its unique lens design provides the same visual performance as other conventional lens designs.

References

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3. Atchison, D.A. Spectacle Lens Design - Development and Present State. Australian Journal of Optometry, 67: 97-107, 1984. DOI: https://doi.org/10.1111/j.1444-0938.1984.tb02363.x

4. Smith, G. and D.A. Atchison. Construc­tion, specification and mathematical description of aspheric surfaces. American Journal of Optometry and Physiological Optics, 60: 216-223, 1983. DOI: https://doi.org/10.1097/00006324-198303000-00009

5. Ward, B. and J.K. Davis. The Modulation Transfer Function as a Performance Specification for Ophthalmic Lens and Pro­tective Devices. American Journal of Optome11y and Archives of American Academy of Optome11y, 49: 234-259, 1972. DOI: https://doi.org/10.1002/j.2330-9474.1972.tb04314.x

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7. Sekuler, R. and P. Mulvanny. Corre­spondence: Acuity and Contrast Sensitivity. British Journal of Ophthalmology 67: 134, 1983. DOI: https://doi.org/10.1136/bjo.67.2.134

8. Arden, G.B. The Importance of Measuring Contrast Sensitivity in Cases of Visual Dis­turbance. British Journal of Ophthalmology, 62: 198-209, 1978. DOI: https://doi.org/10.1136/bjo.62.4.198

9. Strong, G. and G.C. Woo. A distance visual acuity chart incorporating some new design features. Archives of Ophthalmology, 103: 44-46, 1985. DOI: https://doi.org/10.1001/archopht.1985.01050010048016

10. Ginsburg, A.P. A New Contrast Sensitivity Vision Test Chart. American Journal of Optomet,y and Physiological Optics, 61: 403-407, 1984. DOI: https://doi.org/10.1097/00006324-198406000-00011

11. Hess, E.R. and R.F. Howell. Functional area for summation to threshold for sinusoidal gratings. Vision Research, 18: 369-374, 1978. DOI: https://doi.org/10.1016/0042-6989(78)90045-7

12. Atchison, D.A. Third order theory and aspheric spectacle lens design. Ophthalmic and Physiological Optics, 4: 179-186, 1984. DOI: https://doi.org/10.1016/0275-5408(84)90779-8

Published

1989-12-01

How to Cite

Woo, G., & Otto, D. (1989). Visual Performance Through the Aspheral Lens . Canadian Journal of Optometry, 50(4), 242–248. https://doi.org/10.65636/cjo.v50i4.6983

Issue

Section

Original Research