What's with the red eyes?

Red eyes are normal conjunctival congestion performance, many diseases can show this symptom, more common are the following: first, bacterial infection caused by local inflammation, such as bacterial conjunctivitis or bacterial keratitis, need to use antibiotic treatment, such as levofloxacin hydrochloride eye drops; Second, uveitis or scleritis, in addition to showing eye congestion, will also show eye pain, vision decline, this disease is caused by abnormal local immune mechanism, the need to use glucocorticoids and cycloplegic treatment, such as compound tropicamide eye drops, atropine eye drops, fluorometholone eye drops; Third, glaucoma, this disease generally manifests as eye pain, decreased vision, and conjunctival congestion in one eye, requiring treatment to lower intraocular pressure.