Ocular Aberration

Ocular aberration refers to deviations in the way light is focused by the optical components of the eye (cornea and lens) compared to an ideal optical system. These aberrations distort the image formed on the retina and contribute to blurred or distorted vision. Lower-order aberrations include defocus (myopia/hyperopia) and astigmatism, while higher-order aberrations cause more complex visual distortions. Ocular aberrations are measured using wavefront sensing technology and described mathematically using Zernike polynomials. In assistive technology, understanding individual ocular aberrations enables personalized image pre-compensation to improve visual clarity on computer displays.