Later, circular needles were invented, which can also be used to knit in the round: the circular needle looks like two short knitting needles connected by a cable between them. Longer circular needles can be used to produce narrow tubes of knitting for socks, mittens, and other items using the Magic Loop technique.
Occasional burning and itching of the eyes is often the result of a foreign substance in the eye. Once the substance is removed, the burning and itching will subside and other symptoms will disappear relatively quickly. Sometimes these symptoms develop in response to temporary irritants such as cigarette smoke or dust.
Eyestrain is another possible cause of burning, itchy eyes. Common causes of eyestrain include looking at digital screens all day or driving long distances. Eyestrain may develop at night if you are trying to read in a dimly lit spot or if you havenât stopped to rest your eyes. Being stressed or tired may cause you develop eyestrain.