University of South Florida

Virginia Commonwealth University

Center for Innovative Technology

Virginia Polytechnic Institute and State University

David W Richards

Kent A Murphy

Dennis Karl Killinger

Christopher Lawrence Passaglia

Erin L Greenberg

Wyatt Saxon

Brian Madow

Anali Makoui

The present invention includes an automated method for grading the blurring of ocular fundus images to permit automated grading of severity of vitritis. Standard fundoscopic images are converted to gray-scale images. The gray-scale images are processed through a low-pass filter to eliminate high frequency components. The low pass image is subtracted from the corresponding original image, producing the difference image. The difference image is converted to the final entropy image. The entropy image is processed using Fast Fourier Transform to calculate its power. The final blur score is calculated.

Quantitative image analysis applied to the grading of vitreous haze

The present invention includes a method of detecting nerve cell damage representative of glaucoma including the steps of: imaging a human retina in vivo, measuring the reflected light intensity at a first predetermined wavelength wherein values returned from healthy and damaged areas of retina are substantially identical, measuring a second reflected light intensity at a predetermined wavelength wherein values of healthy and damaged retina substantially diverge, and recording the differences between the first and second values, which values are indicative of glaucoma damage.

Differential spectroscopic imaging of the human retina

An instrument and method for examining the optic nerve head (34) of a patient's eye (14) is disclosed. The instrument is comprised of a gonioscopic lens (10) a lens system (26) where the lens system (26) directs a collimated beam of light towards a point (32) away from the center line (28) through the gonioscopic lens (10) and eye (14). When the patient fixates on the beam of light (32), the ophthalmologist can examine the optic nerve head (34) through the gonioscopic lens (10).

Ophthalmic contact lens with internal fixation light for examination of

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Tampa, FL, United States of America

David W Richards