Final answer:
Chromatic aberration on vision is worse when not looking through the lens's optical center due to greater dispersion at the edges. The option (A) is correct.
Step-by-step explanation:
The negative effect of chromatic aberration on vision is increased if the eye is not looking through the optical center of the lens. Chromatic aberration occurs due to the dependence of the wavelength of light on the refractive index of the lens, which causes different colors of light to be refracted differently and thus have different focal points.
When looking through the edges of the peripheral area of a lens, the dispersion is more significant, and the image appears more blurred compared to looking through the optical center where the effect is minimized. Therefore, option (A) is correct.