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.
Causes of Dry Eyes. 1  Any disruption in the tear production process. 2  Blepharitis with inflammed eyelids can cause dry itchy eye symptoms.  Computer Users tend to blink much less frequently (about 3-4 times per minute verses the normal about 10-15 times per minute).