After a laboratory at Tsinghua University installed LED lights, an assistant saw an ophthalmologist for eye pain, but the prescribed eye drops were ineffective. The problem was later attributed to blue light emitted by the LED lights, and his condition improved after wearing blue-light-blocking glasses.
Professor Jou Jwo-Huei of the Department of Materials Science and Engineering at National Tsinghua University in Taiwan shared this case in an interview on the “Health 1+1” program on NTD, a sister outlet of The Epoch Times. As a researcher who studies light, he said that some light sources we encounter in modern-day life may be “invisible killers” of health. Excessively bright or blue light can not only cause eye diseases but may also affect the endocrine system, leading to insomnia and increasing the risk of cancer.
