The object of convergence is the directing of the yellow spot in each eye towards the same point, so as to produce singleness of vision; diplopia, or double vision, at once resulting when the image of an object is formed on parts of the retina which do not exactly. correspond in the two eyes.
Hives are red, itchy, slightly elevated swellings. Itching may be severe. Hives have clearly defined borders and may have a pale center. Typically, crops of hives come and go. One hive may remain for several hours, then disappear, and later, another may appear elsewhere.
An itching back may occur as a result of an allergic reaction to laundry detergent. An itching back could be caused by a number of reasons, including dry skin, a bug bite or even sunburn. Hives typically stem from an allergic reaction. Anti-itch cream can be applied to alleviate the symptoms of hives.