Cornea foreign body causing

Any sharp object that injures the eye with sufficient farce can cause a corneal laceration in which the stroma is penetrated to any depth. Corneal penetration occurs if the object or foreign body passes completely through the cornea. Objects that may cause lacerating or penetrating... 

Approximately 42% to 64% of RCEs occur after superficial trauma to the cornea. Fingernail injuries are reported to be the most common cause of traumatic RCE. Other causes of traumatic RCE include injuries from paper, cardboard, vegetative material, contact lenses, foreign body removal, and trauma to the epithelium during LASIK. 

Dexamethasone is a steroid antibiotic combination. Tobramycin inhibits bacterial protein synthesis, causing death dexamethasone suppresses the inflammatory response. The combination is indicated in superficial bacterial ocular infection or risk of bacterial ocnlar infection inflammatory conditions of palpebral and bulbar conjunctiva, cornea, and anterior segments of globe where inherent risk of steroid use in certain infective conjunctivitis is accepted to obtain a diminution of edema and inflammation chronic anterior uveitis and comeal injury from chemical, radiation, or thermal bums, or penetration of foreign bodies, where risk of superficial ocular infection is high, or an expectation, or when potentially dangerous numbers of bacteria will be present in the eye. 

Intra-ocular iron foreign bodies can cause siderosis after an apparently uneventful recovery, resulting in reduced visual acuity and sometimes blindness. Surgical removal is therefore essential. Small metallic foreign bodies should also be removed from the cornea where failure to do so can lead to scarring, rust deposition (in the case of iron) and iritis. Because modem munitions may leave many tiny foreign bodies, this can involve significant amounts of medical time. 

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