and responding to topical medications such as anti-inflammatory drops. Usually urgent acute closed-angle glaucoma – implies injury to the optic nerve with the potential for irreversible vision loss which may be permanent unless treated quickly, as a result of increased pressure within the eyeball. Not all forms of glaucoma are acute, and not all are associated with increased intraocular pressure. eye injury keratitis – a potentially serious inflammation or injury to the cornea (window), often associated with significant pain, light intolerance, and deterioration in vision. Numerous causes include virus infection. Injury from contact lenses can lead to keratitis. iritis – together with the ciliary body and choroid, the iris makes up the uvea, part of the middle, pigmented, structures of the eye. Inflammation of this layer (uveitis) requires urgent control and is estimated to be responsible for 10% of blindness in the United States. scleritis – a serious inflammatory condition, often painful, that can result in permanent vision loss, and without an identifiable cause in half of those presenting with it. About 30–40% have an underlying systemic autoimmune condition. tick-borne illnesses like Rocky Mountain spotted fever – the eye is not primarily involved, but the presence of conjunctivitis, along with fever and rash, may help with the diagnosis in appropriate circumstances. See also List of eye diseases and disorders Ocular straylight References External links Medical emergencies Eye diseases External signs of ageing Disorders of conjunctiva