Testing for glaucoma with the frequency-doubling illusion in the whole, macular and eccentric visual fields.

@article{Maddess1999TestingFG,
  title={Testing for glaucoma with the frequency-doubling illusion in the whole, macular and eccentric visual fields.},
  author={Ted Maddess and W L Severt},
  journal={Australian and New Zealand journal of ophthalmology},
  year={1999},
  volume={27 3-4},
  pages={194-6}
}
PURPOSE The frequency doubling (FD) illusion is the basis for new diagnostic methods for glaucoma. The FD illusion is seen when low spatial frequency grating patterns are contrast modulated at high rates. The present experiments examined which spatial frequencies might be optimal and whether high flicker rates are required. METHODS We determined contrast thresholds for the following: W1, a wide-field 0.25 c/deg grating at 27 Hz contrast reversal; W2, as W1 but no flicker; MAC, 27 Hz, 4 c/deg… CONTINUE READING

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