My research seeks to allow physicians to diagnose diseases earlier, improve treatment monitoring, and practice more individualized precision medicine tailored to each patient through molecular imaging. My interest is in applying physics, bioengineering, and mathematical modeling to develop novel retinal imaging systems and laser therapies. I have co-developed a novel, inexpensive system for providing tele-ultrasound, co-founded a retinal imaging company, and investigate pattern scanning laser photocoagulation (PASCAL), laser-tissue interactions, and restorative retinal laser therapy to create minimally traumatic retinal laser therapy. I am interested in developing more targeted laser therapy through modulation of pulse duration, wavelength, beam characteristics, and physical modulators. I study photoacoustic and molecular imaging of the retina and choroid for retinal ischemic diseases, including macular degeneration, diabetic retinopathy, vein occlusions, and sickle cell retinopathy. The photoacoustic effect uses light absorption to induce slight local temperature changes, producing ultrasound waves. The imaging devise detects these ultrasound waves to create a high-resolution, 3-D image of the retina, choroid, and optic nerve. This allows for non-invasive functional imaging including tissue oxygenation and blood distribution. Through the use of contrast agents targeting neovascularization, I can achieve molecular imaging of the eye for early diagnosis of macular degeneration, prognostication, and determination of response to therapy.

photoacoustic microscopy; photoacoustic imaging; retina; ophthalmology; laser photocoagulation; molecular imaging; selective retinal therapy; laser therapy.