Yuscan Usa, LLC

Rong-Chun Yu

Nai-Teng Yu

Mark A Samuels

A method is provided that includes discriminating an autofluorescence (AF) response of a lens tissue of an eye due to a current level of 2-(2-furoyl)-4(5)-furanyl-1H-imidazole (FFI) in the lens tissue by interrogating a lens tissue of an eye along a visual axis of the eye by activating an illuminator for a select time to produce interrogating irradiation having a peak wavelength of 425 nm to 460 nm, the illuminator comprising at least one light source and a focal lens positioned with respect to the light source. The method also includes obtaining at least one image of the autofluorescence response of the lens tissue from a detector, the detector including a digital camera unit, analyzing the at least one image to determine a total autofluorescence index of the lens tissue, and determining a current level of FFI in the lens tissue based, at least in part, on the total autofluorescence index.

Devices and methods for determining a level of FFI in a lens tissue

A device is provided that may include an illuminator operable to interrogate at least a lens of an eye. The illuminator may include at least one light source and a lens positioned with respect to the light source to produce interrogating radiation. The device also may include a detector operable to image the total autofluorescence response of the lens of the eye as viewable through a pupil of the eye, the detector comprising an image sensor. The device can also include a controller operable to control operation of the illuminator and the detector. The controller may interrogate at least the lens of the eye by activating the illuminator for a select time, obtain at least one image of the total autofluorescence response of the lens at the detector during or immediately subsequent to the select time, and transmit the at least one image to a remote device.

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Diamond Bar, CA, United States of America

Rong-Chun Yu