A test of repeatability of human eye aberration measuring instrument with Hartmann sensor

The human eye aberration Hartmann measuring instrument measures wavefront with Hartmann-Shack wavefront sensor and wavefront reconstruction is implemented with Zernike polynomial. Single frame sampling and continuous sampling for static aberration of simulated human eye and dynamic aberration of human eye are carried out with the instrument. The maximum deviation of Zernike coefficient, PV value and RMS standard error for the obtained static wavefront aberration of the simulated eye are 0.016, 0.061 and 0.006 wavelength, respectively. The maximum deviation of Zernike coefficient, PV value and RMS standard error for the dynamic human eye wavefront aberration are 0.045 , 0.167 and 0.030 wavelength, respectively. All these specifications are less than 1/5 wavelength and this shows that the instrument has a higher repeatability.