Aberrometry and Wavefront Imaging: An advanced technique to measure visual acuity that may replace conventional methods. Aberrometry measures the way a wavefront of light passes through the cornea and lens of the eye. Aberrations, or distortions that occur as light travels through the eye, are measured and correspond to specific vision defects. The previous methods for testing visual acuity only measure lower-order aberrations, while this method has the potential to detect higher-order defects. The procedure is performed using a machine known as an aberrometer.
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