Device screen vs projected image on brain development
Yes — there is a difference, but not exactly in the way most people assume. Let’s break it down neurologically and physiologically, especially for children. 1. Light Source: Direct vs Reflected Laptop / tablet / phone / TV These are self-emitting light sources. The light travels directly from the screen into the eyes. They contain a high amount of blue wavelength light. The eyes must constantly adjust to pixel refresh, brightness shifts, and contrast changes. Projector The image is projected onto a surface and then reflected into the eyes. This is closer to how we see objects in the natural world (reflected light, not direct emission). Light is usually softer and more diffused (depending on projector quality and room lighting). Neurologically, reflected light is generally less stimulating and less straining to the visual system. That part of your intuition is correct. 2. Eye Strain and Visual Fatigue Children’s visual systems are still develop...