Clinically, higher order aberrations have a predictable effect on vision and include all of the following EXCEPT what?

Higher order aberrations refer to complex optical imperfections in the eye that can impact vision quality beyond what is typically accounted for by standard refractive errors like nearsightedness or farsightedness. These aberrations can lead to various visual disturbances, particularly in challenging conditions such as low light or high contrast scenarios.

Night vision issues arise directly from higher order aberrations. These optical errors can scatter light and reduce clarity, making it difficult to see in dimly lit environments. Similarly, distorted perception of lines can occur as higher order aberrations can warp the image seen by the retina, leading to straight lines appearing wavy or bent.

Difficulty with contrast sensitivity is another area significantly affected by higher order aberrations. Individuals with these aberrations may struggle to differentiate between objects and their backgrounds, especially in low-contrast situations, as aberrations distort the image and reduce overall visual clarity.

In contrast, color vision is typically influenced by the functioning of the photoreceptors in the retina and the processing of visual signals in the brain. While higher order aberrations can degrade the quality of an image, they do not specifically cause issues related to the perception of different colors. Hence, this makes it the exception among the listed effects of higher order aberrations on vision.