Unilateral Corneal Edema Research Articles

Recurrent unilateral corneal edema in a 54-year-old patient after endurance sports in low temperature

Introduction: Corneal edema in endurance sports at low temperatures is a rare occurrence, and few reports can be found in the literature. Patient and Clinical Findings: A case of unilateral corneal edema in a 54-year-old man with a history of laser in situ keratomileusis surgery, cataract surgery, and vitrectomy is presented. Recurrent episodes of corneal edema were observed during endurance cycling in temperatures below 10 °C, with complete recovery observed the next day without any treatment. Diagnosis, Interventions, and Outcomes: Pathophysiology and therapeutic strategies were discussed. Local administration of hyperosmolar saline lacked of any effect as did administration of acetazolamide. A protection of the affected eye by contact lens was not successful, but ski goggles could effectively prevent the corneal edema. Conclusions: Some single reports in the literature described roughly similar corneal findings under different conditions. A systematic evaluation of this case could reveal a fateful combination of cold temperature, physical activity, and susceptibility of the corneal endothelium. Protection from cold wind by ski goggles was found to be an effective practical approach.

A Patient With Recurrent Immune Stromal Keratitis and Adherence Challenges.

Herpes simplex keratitis (HSK) is a common yet potentially blinding condition caused by a primary or reactivated herpetic infection of the cornea. Immune stromal keratitis (ISK), a type of HSK, is classified by a cellular and neovascularization infiltration of the cornea, and patients with ISK may experience low-grade chronic keratitis for years. A 52-year-old man presented to the eye clinic complaining of a watery and itchy right eye with mildly blurred vision. With consultation from a corneal specialist, the patient was given the presumptive diagnosis of ISK in the right eye based on the unilateral corneal presentation and lack of corneal sensitivity. ISK presents unilaterally with decreased or absent corneal sensitivity and nonspecific symptoms. It should be at the top of the list in the differential diagnosis in any patient with unilateral corneal edema, opacification, or neovascularization, and the patient should be started on oral antiviral therapy.

A Case of Unilateral Corneal Edema after Exposure to 0.12% Cholorohexidine

Purpose: We report a case of permanent corneal opacity caused by unilateral chemical burns after exposure to a low-dose (0.12%) chlorhexidine antiseptic solution during a dental procedure.Case summary: A 33-year-old woman presented to our clinic with conjunctival injection, ocular irritation, and blurred vision in her right eye; all symptoms had been present for 2 weeks. These symptoms began several hours after a dental procedure, in which 0.12% chlorhexidine antiseptic solution had been splashed into the right eye. Initial examination revealed that the patient’s best-corrected visual acuity (BCVA) was 20/200 in the right eye. Slit lamp examination and anterior segment optical coherence tomography revealed substantial corneal edema and stromal infiltration on the nasal side. The patient’s BCVA improved to 20/20 in the right eye after 3 months of treatment with topical corticosteroid. However, the stromal opacity was permanent and the corneal endothelial cell count was substantially reduced to approximately 550 cells/mm2.Conclusions: Low-dose (0.12%) chlorhexidine on the ocular surface may cause irreversible corneal opacity and chemical burn-induced endothelial cell damage.

Unilateral corneal edema caused by a hidden foreign body

Abstract Case report A middle-aged adult male was referred to our institution due to unilateral corneal edema for a possible corneal transplant. At first, the patient denied a history of trauma. A small foreign body, which had been overlooked by the primary ophthalmologist, was detected by gonioscopy, embedded in the anterior chamber angle. It was successfully surgically removed and visual results were good. Discussion In any patient with unilateral unexplained corneal edema, it is necessary to rule out the presence of a foreign body in the anterior chamber.

Edema corneal unilateral causado por un cuerpo extraño oculto

Case reportA middle-aged adult male was referred to our institution due to unilateral corneal edema for a possible corneal transplant. At first, the patient denied a history of trauma. A small foreign body, which had been overlooked by the primary ophthalmologist, was detected by gonioscopy, embedded in the anterior chamber angle. It was successfully surgically removed and visual results were good. DiscussionIn any patient with unilateral unexplained corneal edema, it is necessary to rule out the presence of a foreign body in the anterior chamber.

An Unusual Presentation of Corneal Perforation in a Neonate Following Instrument-Assisted Delivery

A 25-week-old neonate was noted to have unilateral corneal edema and buphthalmos at birth following a forceps assisted delivery. Ten days later, examination of the neonate under anesthesia showed a central corneal perforation with a possible retinal detachment. By this time the neonate’s affected eye was deemed unsalvageable, and therefore an enucleation was performed with insertion of an ocular implant. Subsequent histopathology of the enucleated eye revealed a grossly malformed anterior segment and findings usually associated with congenital glaucoma. This is the first reported case in the literature of a neonatal corneal perforation in the context of instrument-assisted delivery. This case highlights the need to actively investigate the aetiology of cloudy corneas in neonates. Early exploration and surgical intervention may be necessary especially if congenital glaucoma is suspected to be the underlying aeitlogy.

Concomitant canine distemper, infectious canine hepatitis, canine parvoviral enteritis, canine infectious tracheobronchitis, and toxoplasmosis in a puppy

The concomitant infections of Canine distemper virus (CDV), Canine adenovirus A types 1 (CAdV-1) and 2 (CAdV-2), Canine parvovirus type 2 (CPV-2), and Toxoplasma gondii are described in a 43-day-old mixed-breed puppy. Clinically, there were convulsions and blindness with spontaneous death; 14 siblings of this puppy, born to a 10-month-old dam, which was seropositive (titer: 1,024) for T. gondii, also died. Necropsy revealed unilateral corneal edema (blue eye), depletion of intestinal lymphoid tissue, non-collapsible lungs, congestion of meningeal vessels, and a pale area in the myocardium. Histopathology demonstrated necrotizing myocarditis associated with intralesional apicomplexan protozoa; necrotizing and chronic hepatitis associated with rare intranuclear inclusion bodies within hepatocytes; necrotizing bronchitis and bronchiolitis; interstitial pneumonia associated with eosinophilic intracytoplasmic inclusion bodies within epithelial cells; atrophy and fusion of intestinal villi with cryptal necrosis; and white matter demyelination of the cerebrum and cerebellum associated with intranuclear inclusion bodies within astrocytes. Polymerase chain reaction (PCR) amplified the partial fragments (bp) of the CDV N gene (290 bp), CPV-2c VP2 capsid protein gene (583 bp), and CAdV-1 (508 bp) and CAdV-2 (1,030 bp) E gene from urine and tissue samples. The PCR assays demonstrated that the apicomplexan protozoa observed within several organs contained DNA specific for T. gondii; genotyping revealed T. gondii type III. The findings support the characterization of concomitant infections of CDV, CAdV-1, CAdV-2, CPV-2, and T. gondii in this puppy. Further, seroreactivity to T. gondii of the dam in association with the systemic disease observed in the puppy described herein is suggestive of congenital toxoplasmosis.

Corneal Edema Induced by Cold in Trigeminal Nerve Palsy

We examined a 34-year-old man who complained of decreased visual acuity in the right eye when exposed to cold environmental temperatures. Although examination at room temperature was unremarkable, he developed prominent unilateral corneal edema of the right eye when placed in a cold room at 4 C. Corneal thickness increased from 525 to 789 microns in the affected eye. Further examination disclosed a right-sided trigeminal nerve palsy. He was eventually found to have a 3 X 2-cm tentorial ridge meningioma on the right.

Clinical, Electron Microscopic, and Immunohistochemical Study of the Corneal Endothelium and Descemet's Membrane in the Iridocorneal Endothelial Syndrome

Two women with the iridocorneal endothelial syndrome had unilateral corneal edema, iris stromal atrophy, and glaucoma. Each underwent penetrating keratoplasty. Transmission electron microscopy of the corneal buttons disclosed a thin, normally structured Descemet's membrane bounded posteriorly by a posterior collagenous layer that contained banded and fibrillar tissue, indicating that the disorder was acquired after childhood. Scanning electron microscopy showed some degenerated corneal endothelial cells with filopodial cytoplasmic projections, suggesting endothelial migration. Transmission electron microscopy of the endothelium showed no signs of epithelial-like alteration, such as stratification, desmosomal junctions, or increased cytoplasmic fibrils. Immunohistochemical staining of fresh-frozen sections with monoclonal antibodies to keratin showed normal staining of the epithelium and no staining of the endothelium. Occasional lymphocytes were seen within the endothelium in one case but were also observed in one case of an inherited corneal disease, posterior polymorphous dystrophy, suggesting that they might be normal "passenger" cells migrating in the endothelial monolayer.

Specular Microscopic and Histologic Observations in Nonguttate Corneal Endothelial Degeneration

Six phakic patients with unilateral corneal edema and clinically normal-appearing fellow eyes were examined with specular microscopy and found to have endothelial pleomorphism and reduced cell counts in the nonedematous cornea. None of these patients had any previous eye disease, trauma, inflammation, or surgery. Clinically unrecognized endothelial disease was proposed as a cause for the unilateral corneal edema and was verified by light and electron microscopic studies in five patients. These pathologic findings vary somewhat from those found in Fuchs’ dystrophy and may represent either a variant or a form of endothelial cell degeneration of as yet undetermined etiology. Our studies suggest that this condition is not detectable in the nonedematous cornea by standard high magnification biomicroscopy and requires the use of the clinical specular microscope to confirm the diagnosis in suspected cases.

Contact Lenses and Oral Contraceptives

A case report is presented of a 33 year-old short-sighted married woman who had worn corneal contact lenses for 3 years prior to taking the oral contraceptive Oracon (ethinyl estradiol .1 mg daily for 16 days followed by dimethisterone 25 mg plus ethinyl estradiol .1 mg daily for 5 days). After 10 days of therapy the woman noted improvement of acne vulgaris but discontinued the drug because of ankle edema weight gain fullness of face and breasts and increasing prominence of preexistent mild varicose veins. A few days later she began to notice photophobia in direct sunlight. 3 weeks later an opthamologist examined her who detected unilateral corneal edema and superficial corneal opacities staining with fluorescein. She discontinued wearing the contact lenses. The photophobia disappeared within 36 hours and the cornea had completely recovered in 3 weeks. She then resumed wearing the contact lenses without problems. Information is requested on any evidence of oral contraceptive therapy being associated with disturbances of contact lens wearing in other patients.