Single eyeball congestion how to return a responsibility

Single eye shows hyperemia due to stimulation of conjunctival tissue in one eye, causing telangiectasis and increased blood flow. There are many causes of conjunctival hyperemia, most common are the following. The first is due to conjunctivitis, and do not pay attention to eye hygiene, such as rubbing eyes with dirty hands or dirty water into the eyes. The second is due to iridocyclitis, which is an autoimmune disease. The third is due to dry eye disease caused by dry eye patients because of the lack of tear protection of the cornea, will lead to eye show obvious stripping, tears, pain, dryness and other performance, can cause reactive conjunctival congestion. Fourth, due to rubbing eyes, eyes into the sand and other foreign bodies, leading to conjunctival tissue by mechanical stimulation caused.