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.
People who have allergies are often quick to seek help for symptoms like sneezing, sniffling, and nasal congestion. But allergies can affect the eyes, too, causing red, itchy, burning, and watery eyes and swollen eyelids. The good news is that the same treatments and self-help strategies that ease nasal allergy symptoms work for eye allergies, too.