Optical coherence tomography-based ophthalmic testing methods, devices and systems
In accordance with one aspect of the present invention, an optical coherence tomography-based ophthalmic testing center system includes an optical coherence tomography instrument comprising an eyepiece for receiving at least one eye of a user or subject; a light source that outputs light that is directed through the eyepiece into the user's or subject's eye, an interferometer configured to produce optical interference using light reflected from the user's/subject's eye, an optical detector disposed so as to detect said optical interference; and a processing unit coupled to the detector. The ophthalmic testing center system can be configured to perform a multitude of self-administered functional and/or structural ophthalmic tests and output the test data.
1. An optical coherence tomography instrument comprising:
an eyepiece for receiving an eye of a user;
a target display visible through the eyepiece;
a light source that outputs light that is directed through the eyepiece to the user's eye;
an interferometer configured to produce optical interference using light reflected from the user's eye;
an optical detector disposed so as to detect the optical interference; and
electronics coupled to the target display and the detector and configured to provide an output based on optical coherence tomography measurements obtained using the interferometer,
wherein the electronics are further configured to produce features on the target display of varying size and receive user responses to test the user's visual acuity.
2. The optical coherence tomography device of claim 1 , further comprising an autofocus lens system configured to focus the features on the retina.
3. The optical coherence tomography device of claim 1 , wherein an optical distance between the eyepiece and the features is adjustable.
4. The optical coherence tomography device of claim 1 , wherein the electronics are configured to display the features simultaneously.
5. The optical coherence tomography device of claim 1 , wherein the electronics are configured to display the features in series.
6. The optical coherence tomography device of claim 1 , wherein the features are alphanumeric symbols.
7. The optical coherence tomography device of claim 6 , wherein the alphanumeric symbols vary in contrast, spacing, font and color.
8. The optical coherence tomography device of claim 1 , wherein the user responses are audible.
9. The optical coherence tomography device of claim 1 , further comprising:
a microphone input device configured to receive user responses; and
the electronics are configured process the user responses and determine an accuracy of the user responses.
10. The optical coherence tomography device of claim 1 , wherein the electronics are configured to test the user's visual acuity on both eyes simultaneously.
11. The optical coherence tomography device of claim 1 , wherein the electronics are configured to test the user's visual acuity on both eyes sequentially.
12. The optical coherence tomography device of claim 1 , wherein the electronics are configured to compare the user responses to a normative database.
13. The optical coherence tomography device of claim 1 , wherein the electronics are configured to generate various statistics based on the user responses.
14. The optical coherence tomography device of claim 1 , wherein the electronics are configured to output results of the visual acuity test.
15. The optical coherence tomography device of claim 1 , wherein the visual acuity test comprises eye tracking methodologies.
16. The optical coherence tomography device of claim 1 , further configured to test the user's visual acuity based on the user response to a last set of features that did not fail termination criteria.
17. The optical coherence tomography device of claim 1 , wherein the features are optokinetic targets, and wherein the user responses are responsive eye movements.
18. The optical coherence tomography device of claim 17 , wherein the electronics are configured to vary the frequency, speed, color, and contrast of the optokinetic targets.
19. The optical coherence tomography device of claim 1 , wherein the electronics are configured to produce suppression stimuli on the target display.