Cell therapies may repair damaged eye tissues but doctors cannot easily track transplanted cells. This research labels stem cells with gold nanoparticles that strongly reflect imaging light. Using optical imaging, clinicians can visualize transplanted cells inside the eye, improving monitoring, safety, and effectiveness of regenerative treatments for vision loss.

Secondary cataracts often develop after cataract surgery when residual lens cells grow on artificial lenses. This research designs light-responsive polymer materials containing azobenzene that alter surface properties to control cell behavior. These materials may prevent secondary cataracts by reducing cell adhesion or maintaining normal cell function, with broader applications in responsive biomedical materials.