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.
Another common symptom of itchy eyes is eye fatigue. It can cause itchy eyes, as well as sore or tired eyes. You may also have blurred vision, watery eyes, or be more sensitive to bright lights. See your doctor right away if you have double vision.