Wavefront sensor having multi-power beam modes, independent adjustment camera, and accomodation range measurement

摘要

A technique for determining accommodation range using a wavefront sensor. The technique comprises the steps of determining when the wavefront sensor goes into focus and adjusting the wavefront sensor until the wavefront sensor begins to go out of the focus. The technique further comprises the step of determining the accommodation range as the difference between the focal power of the sensor when the sensor goes into focus and the focal power of the sensor when the sensor begins to go out of the focus.