Which is better for your eyes, LED or incandescent?

Which is better for your eyes depends on the quality of the LED, but a high-quality LED and an incandescent are both easy on the eyes, while a cheap, flickery LED can be worse than incandescent. Traditional incandescent bulbs have long been considered gentle on the eyes because they have no electronic driver, so they produce absolutely zero invisible flicker, they have a continuous spectrum that closely resembles natural sunlight, and they have a perfect color rendering index of 100, meaning colors and skin tones look natural without strain. They also dim smoothly to very low levels. However, they produce a lot of heat and use much more energy. LEDs are better for energy efficiency and can be just as eye-friendly if you choose the right ones. High-quality LEDs from brands like Philips, CREE, and Soraa are designed to be flicker-free, with stable drivers, high CRI above 90, and warm color temperatures. Cheap LEDs with poor drivers can flicker at 100 to 120 Hertz, which can cause eye strain, headaches, and dizziness in sensitive people. For most people in 2026, a premium warm white 2700K LED that is certified flicker-free and low blue light is better for your eyes than incandescent because it provides bright, clear light without heat or UV, but if you are highly sensitive, you may still prefer incandescent for its completely natural light.