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Ocular neuropathic pain, also called corneal neuralgia, is a spectrum of disorders of ocular pain which are caused by damage or disease affecting the nerves. Ocular neuropathic pain is frequently associated with damaged or dysfunctional corneal nerves, [ 1 ] but the condition can also be caused by peripheral or centralized sensitization. [ 2 ]
Corneal abrasion is a scratch to the surface of the cornea of the eye. [3] Symptoms include pain, redness, light sensitivity , and a feeling like a foreign body is in the eye. [ 1 ] Most people recover completely within three days.
Ischemic optic neuropathies are classified based on the location of the damage and the cause of reduced blood flow if known. [3] Anterior ischemic optic neuropathy (AION) includes diseases that affect the optic nerve head and cause swelling of the optic disc. These diseases often cause sudden rapid visual loss in one eye.
CRION is associated with at least one relapse, and up to 18 relapses have been reported in an individual. [6] Intervals between episodes can range from days to over a decade. [ 1 ] Symptoms will improve with corticosteroids , and recurrence characteristically occurs after reducing or stopping steroids.
Peripheral Ulcerative Keratitis (PUK) is a group of destructive inflammatory diseases involving the peripheral cornea in human eyes. [1] The symptoms of PUK include pain, redness of the eyeball, photophobia, and decreased vision accompanied by distinctive signs of crescent-shaped damage of the cornea.
Most cases of recurrent corneal erosion are acquired. There is often a history of recent corneal injury, such as corneal abrasion or ulcer, but also may be idiopathic or due to corneal dystrophy or corneal disease. In other words, one may develop corneal erosions as a result of another disorder, such as epithelial basement membrane dystrophy ...
Lagophthalmos, the inability to close the eyelids completely is the main cause of exposure keratopathy.Common cause of lagophthalmos is facial nerve (CN VII) palsy. Facial nerve function may affect in several conditions like cerebrovascular accident, head trauma, brain tumors, Bell's palsy etc. Physiological inability to close the eyelids during sleep (nocturnal lagophthalmos) may also cause ...
Neurotrophic keratitis (NK) is a degenerative disease of the cornea caused by damage of the trigeminal nerve, [1] which results in impairment of corneal sensitivity, spontaneous corneal epithelium breakdown, poor corneal healing and development of corneal ulceration, melting and perforation. [2]