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.
There are a variety of factors that can lead to burning and itching of the eyes. Eye irritation can develop as a result of environmental factors, allergies, underlying medical conditions, age or the use of medications. Common causes of burning and itching eyes may include environmental factors such as: Dust.
Like all allergies, eye allergies happen when your body overreacts to something. The immune system makes antibodies that cause your eyes to release histamine and other substances. This causes itching and red, watery eyes. Some people also have nasal allergies. Types. There are two types of eye allergies: seasonal, which are more common, and perennial.