1/9. Treatment of hyperfiltering blebs with Nd:YAG laser-induced subconjunctival bleeding.PURPOSE: To assess the feasibility of a new technique to manage hyperfiltering blebs after penetrating glaucoma surgery. methods: neodymium:yttrium-aluminum-garnet (Nd:YAG) laser bursts were used to induce bleeding in conjunctival and episcleral vessels in the bleb area to achieve local delivery of autologous blood. RESULTS: In the three cases reported here in which this technique was used, the treatment was successful and safe, leading to resolution of hypotony and reduction of the bleb with no complications. CONCLUSION: Subconjunctival bleeding can be achieved using Nd:YAG laser, and can represent a valuable alternative to autologous blood injection in cases of hyperfiltration after glaucoma surgery.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
2/9. optic nerve arteriovenous malformation causing optic apoplexy: case report.OBJECTIVE AND IMPORTANCE: vascular malformations in the optic pathway are rare. Only one case of pathologically confirmed arteriovenous malformation (AVM) of the optic nerve has been reported previously. We document the case of a patient with an optic nerve AVM who presented with optic apoplexy that was diagnosed with the use of magnetic resonance imaging. CLINICAL PRESENTATION: A 15-year-old girl developed left visual disturbance of sudden onset while playing badminton. A magnetic resonance imaging scan disclosed left optic nerve swelling and intraoptical hemorrhage, although an angiogram did not reveal abnormal vessels. INTERVENTION: The patient underwent total removal of the hematoma and tangles of the abnormal vessels in the left optic nerve, which was diagnosed pathologically as an AVM. The patient recovered visual acuity, but the left visual field defect remained unchanged. CONCLUSION: Along with cavernous malformations and optic gliomas, AVMs can be a rare cause of optic nerve apoplexy. T2-weighted magnetic resonance imaging is useful in rendering the diagnosis of an optic nerve AVM, observed as a mass lesion consisting of serpiginous, tangled, low-intensity bands. Early surgical treatment is recommended to obtain a rapid recovery.- - - - - - - - - - ranking = 2keywords = vessel (Clic here for more details about this article) |
3/9. Subconjunctival hemorrhage: the first presenting clinical feature of idiopathic thrombocytopenic purpura.BACKGROUND: Subconjunctival hemorrhage as the first presenting clinical feature of idiopathic thrombocytopenic purpura, to the best of our knowledge, has not been reported earlier. CASE: A 60-year-old woman presented with an isolated finding of subconjunctival hemorrhage. She later developed hemorrhage from retinal vessels and had a single episode of hematuria. OBSERVATIONS: Her blood cell count showed an extremely low platelet count. Her medical history and clinical examination for any other systemic or ophthalmic pathology were negative. Even after treating the patient with blood and platelet transfusion and maintaining her on high doses of systemic steroids, she did not respond well. CONCLUSION: The appearance of spontaneous subconjunctival hemorrhage in a patient should be thoroughly investigated as it can be an initial sign of a grave systemic disorder.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
4/9. Subepithelial intracorneal hemorrhage in a soft contact lens user.PURPOSE: To describe a case of spontaneous subepithelial hemorrhage in a soft contact lens user. methods: A 45-year-old man with irritation and decreased vision had four-quadrant pannus and corneal subepithelial hemorrhage in an annular pattern. RESULTS: The subepithelial hemorrhage was drained and the feeder vessel coagulated. The hemorrhage subsequently absorbed with time. CONCLUSIONS: Soft contact lens users should be monitored for the development of significant neovascularization.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
5/9. Orbital subperiosteal hemorrhage while scuba diving.PURPOSE: To report an uncommon case of unilateral subperiosteal hemorrhage while scuba diving involving the orbit, a condition characterized by proptosis and associated severe ocular motility disturbances with displacement of the eyeball. MATERIAL AND methods: Observational case report. RESULTS: Unilateral subperiosteal hemorrhage in a 31-year-old woman while scuba diving at a depth of 20 meters. This was documented by clinical and radiographic examination. Computed tomography (CT) scan demonstrated a subperiosteal hemorrhage as a self-limited mass protruding into the left orbit. The process resolved without treatment and without visual or motility sequelae. A CT-scan, nuclear magnetic resonance, and conventional angiography did not show any venous abnormalities in the brain. CONCLUSION: During scuba diving at a depth of 20 meters, the pressure is three atmospheres, whereas within the diving mask the pressure is one atmosphere if it is not equilibrated; thus, a negative pressure is created within the mask. Small vessels can be broken in the conjunctiva or subperiosteal space by this force. It is important to exclude vascular abnormalities, especially if there is a positive family history.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
6/9. Cutis marmorata telangiectatica congenita associated with bilateral congenital retinal detachment.Cutis marmorata telangiectatica congenita is a rare congenital vascular disorder of the skin, characterized by persistent telangiectasia of the cutaneous blood vessels often associated with cutaneous ulcers. The only previously recognized ophthalmic association with this condition has been rare instances of unilateral congenital open angle glaucoma. The authors report their observations in a child in whom this cutaneous disorder was associated with congenital bilateral total retinal detachments and secondary neovascular glaucoma. The retinal detachments produced bilateral leukocoria simulating retinoblastoma. The cutaneous disorder and the ocular findings were confirmed histopathologically.- - - - - - - - - - ranking = 8.0112824092414keywords = blood vessel, vessel (Clic here for more details about this article) |
7/9. hemorrhage complicating YAG laser feeder vessel coagulation of cornea vascularization.A neodymium:yttrium-aluminum-garnet (Nd:YAG) laser was used in the thermal mode to coagulate blood vessels in a patient with a vascularized corneal leukoma in an attempt to reduce neovascularization before penetrating keratoplasty. Occlusion of the feeder artery at the periphery was followed by a large stromal hemorrhage. A successful keratoplasty was performed 2 days later.- - - - - - - - - - ranking = 12.011282409241keywords = blood vessel, vessel (Clic here for more details about this article) |
8/9. Arguments for a vascular glaucoma etiology.A material of Open Angle glaucoma (G) collected by an eye practitioner (B S) from 1980 to 1991 is analysed with special respect to the occurrence of disc haemorrhages (Hs) and retinal vein occlusions (VOs). There is a close association between Hs and VOs and G, which in all categories increases with increasing follow-up time. Furthermore, the occurrence of mixed cases--H in one eye and VO in the same or the other--support the opinion that Hs, branch vein occlusions and central vein occlusions are manifestations of the same vascular disease, the difference between them being the size of the vessel affected. The well known morphological changes in the retinal veins of glaucomas and in central vein occlusions are endothelial proliferations causing progressive increase of flow resistance. Similar changes most probably also cause branch occlusions and disc haemorrhages. The vascular affection which obstructs the vessels with hindrance of the blood flow and impaired nutrition of neuronal tissue, might be the primary cause of glaucoma.- - - - - - - - - - ranking = 2keywords = vessel (Clic here for more details about this article) |
9/9. The diagnostic histopathologic features of ocular malaria.BACKGROUND: The ocular complications in patients with malaria have been studied clinically by many investigators, but the histopathologic changes were rarely described and generally regarded as nonspecific. methods: The eye of a 53-year-old man who died of chloroquine-resistant plasmodium falciparum malaria was studied by brightfield and polarized light microscopy. FINDINGS: An epibulbar hemorrhage that involved the conjunctiva, episclera, and tendinous insertion of the medial rectus muscle was present. Cytoadherence and rosetting of the parasitized erythrocytes were observed within the partially occluded lumens of small retinal and uveal blood vessels. The birefringence of hemozoin (malarial pigment) within the lumens of small ocular blood vessels and in the hemorrhagic epibulbar area was demonstrated by polarized light. CONCLUSION: Birefringent hemozoinemia in vascular lumens of ocular tissues indicates systemic malarial infestation by any of the four species of malaria. Cytoadherence and rosetting of the parasitized erythrocytes inside ocular capillaries and venules is diagnostic of P. falciparum and is an important cause of ocular hemorrhage.- - - - - - - - - - ranking = 16.022564818483keywords = blood vessel, vessel (Clic here for more details about this article) |