Adaptive optics flood-illumination camera for high speed retinal imaging. 2006

Jungtae Rha, and Ravi S Jonnal, and Karen E Thorn, and Junle Qu, and Yan Zhang, and Donald T Miller

Current adaptive optics flood-illumination retina cameras operate at low frame rates, acquiring retinal images below seven Hz, which restricts their research and clinical utility. Here we investigate a novel bench top flood-illumination camera that achieves significantly higher frame rates using strobing fiber-coupled superluminescent and laser diodes in conjunction with a scientific-grade CCD. Source strength was sufficient to obviate frame averaging, even for exposures as short as 1/3 msec. Continuous frame rates of 10, 30, and 60 Hz were achieved for imaging 1.8,0.8, and 0.4 deg retinal patches, respectively. Short-burst imaging up to 500 Hz was also achieved by temporarily storing sequences of images on the CCD. High frame rates, short exposure durations (1 msec), and correction of the most significant aberrations of the eye were found necessary for individuating retinal blood cells and directly measuring cellular flow in capillaries. Cone videos of dark adapted eyes showed a surprisingly rapid fluctuation (~1 Hz) in the reflectance of single cones. As further demonstration of the value of the camera, we evaluated the tradeoff between exposure duration and image blur associated with retina motion.

UI MeSH Term Description Entries

Related Publications

Jungtae Rha, and Ravi S Jonnal, and Karen E Thorn, and Junle Qu, and Yan Zhang, and Donald T Miller
July 2023, Optics letters,
Jungtae Rha, and Ravi S Jonnal, and Karen E Thorn, and Junle Qu, and Yan Zhang, and Donald T Miller
June 2019, Biomedical optics express,
Jungtae Rha, and Ravi S Jonnal, and Karen E Thorn, and Junle Qu, and Yan Zhang, and Donald T Miller
November 2020, Ocular immunology and inflammation,
Jungtae Rha, and Ravi S Jonnal, and Karen E Thorn, and Junle Qu, and Yan Zhang, and Donald T Miller
July 2018, Applied optics,
Jungtae Rha, and Ravi S Jonnal, and Karen E Thorn, and Junle Qu, and Yan Zhang, and Donald T Miller
January 2017, PloS one,
Jungtae Rha, and Ravi S Jonnal, and Karen E Thorn, and Junle Qu, and Yan Zhang, and Donald T Miller
January 2019, Romanian journal of ophthalmology,
Jungtae Rha, and Ravi S Jonnal, and Karen E Thorn, and Junle Qu, and Yan Zhang, and Donald T Miller
December 2012, Sensors (Basel, Switzerland),
Jungtae Rha, and Ravi S Jonnal, and Karen E Thorn, and Junle Qu, and Yan Zhang, and Donald T Miller
March 2019, Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists),
Jungtae Rha, and Ravi S Jonnal, and Karen E Thorn, and Junle Qu, and Yan Zhang, and Donald T Miller
October 2005, Optics express,
Jungtae Rha, and Ravi S Jonnal, and Karen E Thorn, and Junle Qu, and Yan Zhang, and Donald T Miller
February 2023, Biomedical optics express,
Copied contents to your clipboard!