Chinese Optics Letters, 2017, 15 (12): 121102, Published Online: Jul. 18, 2018
Bimorph deformable mirror based adaptive optics scanning laser ophthalmoscope for retina imaging in vivo
Abstract
A bimorph deformable mirror (DM) with a large stroke of more than 30 μm using 35 actuators is presented and characterized for an adaptive optics (AO) confocal scanning laser ophthalmoscope application. Facilitated with a Shack–Hartmann wavefront sensor, the bimorph DM-based AO operates closed-loop AO corrections for human eyes and reduces wavefront aberrations in most eyes to below 0.1 μm rms. Results from living eyes, including one exhibiting ~ 5 D of myopia and ~ 2 D of astigmatism along with notable high-order aberrations, reveal a practical efficient aberration correction and demonstrate a great benefit for retina imaging, including improving resolution, increasing brightness, and enhancing the contrast of images.
Yuanyuan Wang, Yi He, Ling Wei, Xiqi Li, Jinsheng Yang, Hong Zhou, Yudong Zhang. Bimorph deformable mirror based adaptive optics scanning laser ophthalmoscope for retina imaging