号称护眼的“大路灯”值得买吗

Core Viewpoint - The recent popularity of "big street lamps" among parents is driven by claims of eye protection and myopia prevention, but experts question their effectiveness and emphasize the importance of proper lighting standards [1][2]. Group 1: Product Characteristics - "Big street lamps" are large, portable lighting fixtures typically around 2 meters tall and weighing about 20 kilograms, with prices ranging from several hundred to nearly ten thousand yuan [1]. - These lamps feature a dual light source design, providing direct light to the desk while also illuminating the ceiling, which enhances the overall reading environment [1]. Group 2: Effectiveness in Myopia Prevention - Experts indicate that there is currently no direct clinical evidence supporting the claim that "big street lamps" significantly prevent myopia, and indoor lighting is only a minor factor in myopia prevention [2]. - Some manufacturers claim their products can improve retinal blood circulation and inhibit rapid eye axis growth, but such medical claims are deemed unreliable as lighting products are not classified as medical devices [2]. Group 3: Considerations for Purchase - When purchasing either "big street lamps" or standard reading lamps, parents should ensure the product meets national standards GB/T 9473-2022 for reading lamps [3]. - Key performance parameters to consider include the spectral characteristics of the lamp, with a recommendation for lamps that closely mimic sunlight, achieving a desk illuminance of over 500 lux and a color rendering index above 95 [3].