Wavefront aberration refers to the distortion of light waves as they pass through an optical system, such as the human eye or a camera lens. This distortion can lead to blurred or unclear images, as the light rays do not converge at a single point. Various factors, including imperfections in the lens or cornea, can contribute to these aberrations. There are different types of wavefront aberrations, including spherical aberration, coma, and astigmatism. These aberrations can be measured and corrected using advanced techniques, such as wavefront sensing, to improve image quality in optical devices and enhance vision in individuals with refractive errors.