Fig. 3.

The power spectra of the wavefront aberration of a static model eye in the AOSLO measured under different light scanning conditions. (a) Both horizontal (fast) and vertical (slow) scanners were scanning over a field of 1.2° X 1.2°. (b) Both scanners were power off. (c) The horizontal (fast) scanner was scanning over a 1.2° angle and the vertical (slow) scanner was power off. (d) The horizontal (fast) scanner was scanning over a 1.2° angle and the vertical (slow) scanner was power on but applied with 0 volt voltage. The artificial frequency component of 15 Hz and its harmonic components are apparent when the vertical scanner was running.