Wide surface design for bare sockets on ceilings. Poor quality light can cause eye strain. With many of us spending time indoors, it's more important than ever to properly light your home. Our products meet stringent test criteria including flicker, strobe, glare, color rendition and dimming effects to ensure they meet EyeComfort requirements. Philips LED bulbs not only deliver comfortable light, but also stay that way for the duration of their lifespan, delivering consistent light quality, output, and color for more than a decade. Switch to light that's easy on your eyes. Your eyes will thank you.