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US 12,697,063 B2Granted
System and method for providing four ring visual electrophysiology stimulus
AssigneeDiagnosys LLC
InventorJeffrey D. Farmer
Life of this patent
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Abstract
A system for testing different regions of the retina of a subject for retinal function, said system comprising: a monitor configured to display a visual electrophysiology stimulus to the subject, wherein the visual electrophysiology stimulus comprises a four ring visual electrophysiology stimulus; at least one active electrode; at least one reference electrode; and a computer configured to receive electrical signals from said at least one active electrode and said at least one reference electrode, and process the electrical signals.
Claims32
An ophthalmic electrophysiology system for testing different regions of the retina of a subject for retinal function, said system comprising:
- a monitor configured to display:
- a first visual electrophysiology stimulus consisting of a single flash of light in the form of a central first ring to stimulate the fovea region of the retina;
- a second visual electrophysiology stimulus consisting of a second ring disposed concentrically relative to the central first ring, wherein the second ring is configured to display a single flash of light to stimulate the parafovea region of the retina;
- a third visual electrophysiology stimulus consisting of a third ring disposed concentrically relative to the second ring, wherein the third ring is configured to display a single flash of light to stimulate the perifovea region of the retina;
- and
- a fourth visual electrophysiology stimulus consisting of a fourth ring disposed concentrically relative to the third ring, wherein the fourth ring is configured to display a single flash of light to stimulate a reference region of the retina;
- at least one active electrode;
- at least one reference electrode;
- and
- a computer configured to:
- control said monitor to display each of the single flashes of light sequentially in order to stimulate the corresponding region of the retina;
- and
- receive electrical signals from said at least one active electrode and said at least one reference electrode, and process the electrical signals.
10 more elements
A method for testing different regions of the retina of a subject for retinal function, said method comprising:
- providing a system comprising:
- a monitor configured to display:
- a first visual electrophysiology stimulus consisting of a single flash of light in the form of a central first ring to stimulate the fovea region of the retina;
- a second visual electrophysiology stimulus consisting of a second ring disposed concentrically relative to the central first ring, wherein the second ring is configured to display a single flash of light to stimulate the parafovea region of the retina;
- a third visual electrophysiology stimulus consisting of a third ring disposed concentrically relative to the second ring, wherein the third ring is configured to display a single flash of light to stimulate the perifovea region of the retina;
- and
- a fourth visual electrophysiology stimulus consisting of a fourth ring disposed concentrically relative to the third ring, wherein the fourth ring is configured to display a single flash of light to stimulate a reference region of the retina;
- at least one active electrode;
- at least one reference electrode;
- and
- a computer configured to:
- control said monitor to display each of the single flashes of light sequentially in order to stimulate the corresponding region of the retina;
- and
- receive electrical signals from said at least one active electrode and said at least one reference electrode, and process the electrical signals;
- attaching said at least one active electrode to the subject;
- attaching said at least one reference electrode to the subject;
- using said computer to (i) control said monitor to display each of the single flashes of light sequentially in order to stimulate the corresponding region of the retina, (ii) receive electrical signals from said at least one active electrode and said at least one reference electrode, and process the electrical signals, and (iii) calculate an amplitude of at least one of the electrical signals evoked from the displayed visual electrophysiology stimulus;
- and
- using said computer to compare the amplitude of the at least one electrical signal evoked from each displayed visual electrophysiology stimulus to previously-determined amplitude data, and calculating a ratio between (i) the amplitude of the at least one electrical signal evoked from each displayed visual electrophysiology stimulus, and (ii) the previously-determined amplitude data.
16 more elements
Dependencies are inferred from the claim text.