Edema of the optic disk and elevation of the disc surface without loss of vision is called
a. a choked disk, or papilledema. c. neovascularization.
b. glaucoma. d. Roth's spots.
A
Disk edema and an elevated disk without loss of vision are found in papilledema, which is caused by increased intracranial pressure obstructing return blood flow from the eye. This is also called a "choked disc." Neovascularization is the formation of new vessels that are very narrow and disorderly in appearance and may extend into the vitreous. This occurs in proliferative diabetic retinopathy. Roth's spots are superficial retinal hemorrhages that are flame-shaped and located in the fundi. They are caused by severe hypertension, occlusion of the central retinal vein, and papilledema.
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