Real-time correction for dynamic wave-front aberrations in human eye

A high-resolution retina imaging system based on adaptive optics technology is built.We use a deformable mirror as a wave-front corrector.The surface of the mirror,wave-front and the influence functions are expressed in terms of an expansion of Zernike's polynomials.We use a straightforward iterative algorithm and control matrix to control the surface of deformable membrane in order to compensate the eye's aberration in real-time.After correction,we can get a root mean square(RMS)correction precision of lower thanλ/7 which is nearly the diffraction limited resolution.The experiment shows that the closed loop bandwidth is lower than nearly 5 Hz,which is capable to track most of the dynamics aberration in human eye and aid eye medical diagnosis so the system has a good future in eyesight's correcrion.