Chromatic aberration occurs when a lens bends different colors at different rates.

Since white light is compose of multiple colors, and Snell’s Law says different light wavelengths bend by different degrees when moving into a material with a different angle of incidence, light won’t reconvene exactly back into white light at the focal point of a lens but will instead have focal points at different depths for each wavelength. As a result, most wavelengths are not in focus in eyeballs.rK3

  1. Caleb Kruse, “Focusing on Blue - 10 Projects,” accessed August 10, 2022, (See notes.)