Annals of ophthalmology
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The effect of severe blunt trauma to the human eye six months after radial keratotomy is discussed. After the injury, the patient initially had a 4-mm corneal abrasion, a 75% hyphema of the anterior chamber, and no noted damage to the corneal structure. ⋯ At no time has there been evidence of rupture to the incision sites or damage to the corneal structure. From this case study, it seems likely that the effect of trauma on deep corneal incisions as performed in radial keratotomy does not adversely affect the corneal integrity of the human eye after six months.
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Systemic anticoagulation rarely is responsible for intraocular hemorrhaging and usually does not require cessation before intraocular surgery. Spontaneous hyphema is only rarely described and then usually in patients who have some underlying vascular abnormality. A case is reported of a patient with no other underlying cause except that she was receiving warfarin sodium, in whom spontaneous hyphemas developed in each eye on two separate occasions.
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Annals of ophthalmology · Sep 1983
Case ReportsCorneal scarring associated with daily soft contact lens wear.
Three young people developed scarring of the corneas in both eyes with loss of visual acuity while wearing cosmetic daily wear soft contact lenses. The condition was bilateral in all cases. The scarring began superiorly, spreading inferiorly, and was associated with signs of external inflammation, that is, conjunctival injection and corneal staining, when the patient first presented. ⋯ Possible etiologies of this condition are discussed, including allergies to chemicals and lens deposits or a hypoxic phenomenon. Induced astigmatism, secondary to soft contact lens wear, has previously been documented, apparently related to prolonged wearing time. These cases may be demonstrating the same phenomenon developed to a more advanced and serious stage.
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Annals of ophthalmology · Apr 1983
Case ReportsPenetrating orbital foreign body with intracranial involvement.
A 19-year-old man presented with a penetrating orbital foreign body. Preoperative evaluation established involvement of the middle cranial fossa and right internal carotid artery. An extensive preoperative evaluation of penetrating orbital trauma and a combined ophthalmic neurosurgical approach is recommended to ensure complete removal of the foreign material and to minimize the morbidity of the surgical extraction.
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Three cases of corneal bee sting were treated. Each eye reacted differently from the others: case 1 with severe pain, conjunctival chemosis and hyperemia, central corneal edema, and reduced visual acuity; case 2 with severe pain, conjunctival hyperemia, and a white corneal infiltrate; and case 3 with only a minimal foreign-body sensation. The reaction to the venom can be toxic or immunologic. The behavior of the toxins-melittin, apamin, and formic acid-and of the principal allergen (probably phospholipase A) are described.