Method and apparatus for correlated ophthalmic measurements

Abstract

A method and system providing multiple ophthalmic and retinal blood measurements is outlined. By extracting multiple digitized wavelength images and quantitative data within a relatively short time period the method allows for compensation of a patients eye or head movement, generation of ophthalmic clinical records, and determination of data relating to blood measurements, such as oxygen saturation and hemoglobin, in addition to ocular and other disease determinations. The method provides for multiple analysis and measurements within a single sitting of the patient, with a single simple instrument and without adaptations to the instrument during a patients eye examination. Beneficially the approach allows for low cost, compact, and even portable implementations offering such analysis and determination outside the current ophthalmic centers providing eased access and earlier diagnosis opportunities.

Description

[0001]This application claims the benefit of U.S. Provisional Application No. 60 / 879,793, filed on Jan. 11, 2007, the entire content of which is incorporated herein by reference.FIELD OF THE INVENTION[0002]The invention relates to ophthalmic analysis and more particularly to using time and wavelength based imaging to provide multiple analyses with reduced constraints on equipment and patient.BACKGROUND OF THE INVENTION[0003]Historically, visits to an ophthalmic specialist or eye center were based upon obtaining a measure of the patients reading quality as a function of distance, color and text dimension. Then based upon these the patient was assessed using a wide variety of graduated lenses to provide a simple three value characterization for each eye of the appropriate lens to correct for common visual defects such as shortsightedness, long-sightedness, and peripheral focus.[0004]In recent years an important trend in such visitations to an ophthalmic center has been the addition of...

AI Technical Summary

Benefits of technology

[0011]In accordance with the invention there is provided a system for performing ophthalmic measurements comprising an optical source, the optical source comprising at least a control port, the optical source for providing a source optical signal at least one of a plurality of predetermined wavelengths, the one of the plurality of predetermined wavelengths being established in dependence of a control wavelength signal provided to the control port. Also provided is a digital detector, the digital detector comprising at least an output port, the digital detec...

Problems solved by technology

Such a requirement for multiple evaluation stations places constraints on the provisioning of such ophthalmic tests for patients to locations with significant floor area, requires the centers providing the services to invest heavily in capital equipment, and provides a psychological barrier to patients in having frequent check-ups and assessments.

This is an inefficient use of resources.

Unfortunately, for a very efficient use of resources, file management becomes extremely difficult with several tests performed on different patients in parallel.

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