Final answer:
Local disturbance in the optic array refers to chromatic aberration, which causes an image to appear fuzzy. This can be corrected through the use of specialized lenses or coatings.
Step-by-step explanation:
Local disturbance in the optic array refers to chromatic aberration, which is a distortion that causes an image to appear fuzzy when each wavelength coming into a transparent material focuses at a different spot.
For example, when white light passes through a prism, it separates into different colors due to chromatic aberration. This can be observed as a color fringing effect around the edges of objects in the image.
This phenomenon can be corrected by using lenses with multiple elements or by using specialized coatings on the lens surface to minimize the dispersion of light.