ABSTRACT
The clincal importance of electroretinogram(ERG) lies in the diagnosis of suspected retinal dysfunction. The noncorneal ERG is essential for certain patients in which corneal recording is difficult such as children and uncooperators. ERGs were recorded using contact lens electrode and skin electrode in 31 volunteers. The results obtained were as follows: The b-wave amplitude with skin electrode was 28.4% compared to that with contact lens electrode. The best recording with skin electrode was made from skin point on the middle third of lower lid. When the eyeball was adducted or abdu cted, the maximum amplitude of b-wave with skin electrode was obtained from the canthus near the central cornea. When the stimulus intensity was elevated from 0.3 Joule to 60 Joules, the maximum amplitude with contact lens electrode was recorded with 20 Joules stimulation, but that with skin electrode was recorded with 60 Joules stimulation.
Subject(s)
Child , Humans , Cornea , Diagnosis , Electrodes , Retinaldehyde , Skin , VolunteersABSTRACT
The authors experienced 2 cases of Takayasu's arteritis which were associated with serous retinal detachment in two young women. Retinal detachment in Takayasu's arteritis is a rare complication. In case 1, proximal hypertension was complicated due to atypical coarctation of thoracic aorta. So the choroidal vascular insufficiency and choroidal ischemia resulted in focal serous retinal detachment. In case 2, insufficient blood supply to the head and upper extremities resulted from coarctation of ascending aorta and its main branches, and the hypotensive collapse of choroidal vessels resulted in choroidal ischemia and focal serous retinal detachment. From these phenomena, we suggest that serous retinal detachment in Takayasu's arteritis can occur due to hypertensive choroidopathy or hypotensive choroidopathy.
Subject(s)
Female , Humans , Aorta , Aorta, Thoracic , Choroid , Head , Hypertension , Ischemia , Retinal Detachment , Retinaldehyde , Takayasu Arteritis , Upper ExtremityABSTRACT
A 15 year-old male patient visited our department with a progressively enlarged conjunctival mass on Nov. 28, 1988. Excisional biopsy and histopathologic examination revealed cavernous hemangioma, an uncommon tumor of the conjunctiva. Authors report a case of cavernous hemangioma of the bulbar conjunctiva. A review of literature of recent years related to cavernous hemangioma was added.
Subject(s)
Adolescent , Humans , Male , Biopsy , Conjunctiva , Hemangioma, CavernousABSTRACT
A 15 year-old male patient visited our department with a progressively enlarged conjunctival mass on Nov. 28, 1988. Excisional biopsy and histopathologic examination revealed cavernous hemangioma, an uncommon tumor of the conjunctiva. Authors report a case of cavernous hemangioma of the bulbar conjunctiva. A review of literature of recent years related to cavernous hemangioma was added.