前田直之教授
Naoyuki Maeda, M.D.
Department of Ophthalmology, Osaka University Medical School, Osaka, Japan

Since the wavefront technology has been introduced in the field of Ophthalmology, remarkable improvements in refractive surgery was obtained with wavefront-guided LASIK. The paradigm shift also became conspicuous in terms of evaluating quality of vision or designing the optical devices such as IOLs, contact lenses, or spectacles.
Aberrometers or wavefront sensors are widely used in the refractive surgery clinic as an essential tool to perform customized ablation, and many instruments are commercially available.
However, it is not always easy for the clinicians to understand the clinical significance of the information obtained by the aberrometer. The terms such as higher-order aberration, RMS, and Zernike polynomials are not the familiar words for the Ophthalmologists, and wavefront maps or point spread function is also very different from corneal topographic maps.
In this paper, principles of wavefront sensing will be presented, and the clinical significance of aberrometry will be explained by showing the clinical cases where the information with the wavefront sensing can be the key for decision making in the clinic.

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