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.
There are many types of eye injury, and symptoms include eye pain, burning, irritation, bleeding, and more. Hay fever, an allergic reaction to outdoor pollens and molds, causes nasal congestion, itchy eyes, and more. Acute sinusitis, an inflammation of the sinuses, causes sinus pain and tenderness, facial redness and more.