Method and apparatus for detecting optic neuropathy
OwnerIvan G. Bodis-Wollnerinventor
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Abstract
A patient is presented with a series of sinusoidal gratings truncated at varying diameters in each quadrant of the visual field (superior nasal, inferior nasal, superior temporal, inferior temporal). The patient fixates on a central point and identifies the point in the series at which he can see the patterns. Comparison of the diameter at which the patient can first perceive the pattern with a standard value provides an indication of not only the existence of optic neuropathy but also the magnitude of the damage.
Claims16
Apparatus for detection of optic neuropathy in a patient comprising an optical display system adapted to present to the patient a series of diagnostic images, each of said diagnostic images consisting of a centrally located fixation point and at least four sinusoidal grating patterns truncated by a Gaussian aperture symmetrically disposed about the fixation point, wherein the diameter of the sinusoidal grating patterns varies across the series of diagnostic images.
A method for detecting of optic neuropathy in a patient comprising
- (a) blocking one eye of the patient to obtain monocular vision;
- (b) presenting to the patient a series of diagnostic images, each of said diagnostic images consisting of a centrally located fixation point and at least four sinusoidal grating patterns truncated by a Gaussian aperture symmetrically disposed about the fixation point, wherein the diameter of the sinusoidal grating patterns varies across the series of diagnostic images;
- (c) comparing the minimum size detected for the patient with a standard value to determine whether optic neuropathy is present.
Dependencies are inferred from the claim text.