Patient tuned ophthalmic imaging system with single exposure multi-type imaging, improved focusing, and improved angiography image sequence display

Abstract

An ophthalmic imaging system provides an automatic focus mechanism based on the difference of consecutive scan lines. The system also provides of user selection of a focus point within a fundus image. A neural network automatically identifies the optic nerve head in an FA or ICGA image, which may be used to determine fixation angle. The system also provides additional scan tables for multiple imaging modalities to accommodate photophobia patients and multi-spectrum imaging options.

Description

technical field [0001] The present invention relates generally to the field of ophthalmic imaging systems. More specifically, the present invention relates to techniques for facilitating user operation of ophthalmic imaging systems. Background technique [0002] Various types of ophthalmic examination systems exist, including ophthalmoscopy, optical coherence tomography (OCT), and other ophthalmic imaging systems. An example of ophthalmic imaging is slit scanning or wide-line fundus imaging (see, e.g., U.S. Patent No. 4,170,398, U.S. Patent No. 4,732,466, PCT Publication No. 2012059236, U.S. Patent Application No. 2014 / 0232987, and U.S. Patent Publication No. 2015 / 0131050, the entire contents of which are hereby incorporated by reference), a promising technique for high-resolution in vivo imaging of the human retina. The imaging method is a hybrid of confocal and widefield imaging systems. By illuminating a narrow band of the retina as it scans, the illumination remains ...

AI Technical Summary

Problems solved by technology

Complicating ophthalmic imaging is the difficulty for patients to remain still during imaging

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