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.
Itchy eyes are usually caused by allergies, which can be irritating. Itchiness can also be caused by pink eye, eye strain, or eye fatigue. If you are in a lot of pain or suspect an infection, see your doctor as soon as possible.
That's why when you have allergies your eyes can get watery or itchy, and when you're sick it can feel like your eyes are heavy. Anxiety - a common condition affecting nearly 20% of Americans and millions more around the world - also has its own vision symptoms.