Neon lighting consists of brightly glowing, electrified glass tubes or bulbs that contain rarefied neon or other gases. Neon tubes can be fabricated in curving artistic shapes, to form letters or pictures, which are mainly used to make dramatic, multicolored glowing signage for advertising. However, neon tubes can produce UV lights, which can hurt the back of your eyes, then the normal lights are not easy to be received. That is , neon lighting just like UV lights has a deep bad effect on the back of eyeballs and iris. That's why neon lighting will do harmful to eyes.