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J.–L.D. Nguyen–Khoa, N. Chateau, J.–J. Gicquel, P. Dighiero, D.–A. Lebuisson; Evaluation of Adaptive Optics for Visual Performance Simulation After Refractive Surgery . Invest. Ophthalmol. Vis. Sci. 2006;47(13):52.
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© ARVO (1962-2015); The Authors (2016-present)
To evaluate adaptive optics ability to simulate preoperatively correction of ocular aberrations resulting from refractive surgery
A Shack–Hartmann irx3 aberrometer (Imagine Eyes, Orsay, France) was combined to an electromagnetic deformable mirror to build an adaptive optics device. We evaluated the ability of this device to correct temporarily the aberrations affecting the vision of 20 subjects, according to the following protocol: (i) measurement of the ocular aberrations until order 6; (ii) adjustment of the electromagnetic mirror shape in order to compensate the measured aberrations; (iii) modification of the mirror shape in order to amplify the natural aberrations by 5 times. This amplification was related to higher order aberrations higher than 3. In each experiment, the fidelity of obtained aberrations was controlled by the aberrometer in term of root–mean–square (RMS) error of the residual wavefront.
This adaptive optics device allowed total correction of measured aberrations in all eyes of this study, even with an 4.5D astigmatic eye. Moreover, the amplification of aberrations proved to be done in all cases. Residual RMS differences between expected and obtained aberrations ranged between 0.035 and 0.105 µm.
Adaptive optics technology carries out a new clinical tool ready to simulate aberrations modifications of the eye in order to predict the quality of vision resulting from refractive surgery. Use of a new technology of electromagnetic deformable mirror improves the quality of aberrations correction..
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