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Are optical aberrations during accommodation a significant problem for refractive surgery?

Abstract

PURPOSE:

To study the limits to a perfect ideal customized wavefront correction due to the change of aberrations during accommodation. METHODS. We measured the dynamic changes of ocular aberrations during accommodation in normal eyes with a real-time Hartmann-Shack wavefront sensor. Those results were used in computer simulations to predict the benefit of a perfect customized correction.

RESULTS:

Due to the continuous changes of the aberrations over time, an ideal perfect static correction will not provide stable aberration-free optics. For example, when the eye accommodates to near objects, due to the changing aberrations, the eye will become aberrated again. An alternative correction using the aberration pattern for a slightly accommodated condition could provide a better-correction in a larger accommodative range, although at the cost of non-perfect correction for far vision.

CONCLUSIONS:

Due to the dynamic nature of ocular optics, a static perfect correction, for instance performed in customized refractive surgery, would not remain perfect for every condition occurring during normal accommodation.

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URL:

http://www.healio.com/ophthalmology/journals/jrs/2002-9-18-5/%7B6a33b3ca-2102-452a-826b-a7b654bab095%7D/are-optical-aberrations-during-accommodation-a-significant-problem-for-refractive-surgery