Optical aberration refers to the distortion or blurring of images produced by lenses or mirrors. This occurs when light rays do not converge at a single point after passing through a lens or reflecting off a mirror. Common types of optical aberrations include chromatic aberration, where colors are misaligned, and spherical aberration, where light rays striking the edges of a lens focus differently than those hitting the center. These imperfections can affect the clarity and quality of images in various optical devices, such as cameras, telescopes, and microscopes. Understanding and correcting optical aberrations is essential for improving image resolution and achieving better performance in these instruments.