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.
The outer membrane of the eye is called the conjunctiva. Any irritation of the cornea or conjunctiva can lead to watery eye. Inflammation of the conjunctiva from (conjunctivitis) infection, irritants (chemical splash, etc.), or allergy (hay fever) is a common cause of itchy, watery eyes, as well as eye swelling. Infection of the eye can require antibiotics in the form of prescription eyedrops.