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Original Article

Analysis of the Cross Cylinder and Chevron Techniques for Finding the Axis of Astigmatism

Pages 144-152 | Received 23 Apr 2009, Published online: 15 Apr 2021

References

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  • Grosvenor TP. Primary Care Optometry. Professional Press, Chicago : 1982: 163–169.
  • Carter JH. Sensitivity variations in the Jackson crossed cylinder axis test. Optom. Weekly 1966; 57(28): 29–32.
  • Carter JH. Some variations in methodology for crossed cylinder astigmatic tests. Optom. Monthly 1981; 72(2): 15–19.
  • Haynes PR. Configuration and orientation of test patterns used with the homokonic cross cylinder for the measurement of astigmatism. Am. J. Optom. Arch. Am. Acad. Optom. 1958; 35: 637–43.
  • Peters HB. Relationship between refractive error and visual acuity at three age levels. Am. J. Optom. Arch. Am. Acad. Optom. 1961; 38: 194–198.
  • Campbell FW and Westheimer G. Sensitivity of the eye to differences in focus. J. Physiol. 1958; 151: 18P.

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