No, an afterimage is not directly related to quantum mechanics. An afterimage is a visual phenomenon that occurs when you look at a bright or intense stimulus, such as a light source, and then look away. You may continue to see a lingering image of the stimulus, often in complementary colors or with altered intensity.
The afterimage phenomenon is typically explained by the way our visual system adapts to changes in light. When you stare at a bright stimulus, the light-sensitive cells in your eyes become overstimulated, and when you shift your gaze, the residual activity of these cells can create an afterimage. This process is primarily related to the physiology and functioning of the human visual system and does not involve quantum effects.
Quantum mechanics, on the other hand, is a branch of physics that describes the behavior of matter and energy at the smallest scales, such as atoms and subatomic particles. It deals with phenomena such as wave-particle duality, superposition, and quantum entanglement. While quantum mechanics plays a fundamental role in understanding the behavior of the microscopic world, it is not directly linked to the specific phenomenon of afterimages.