All satements are true about papilloedema except-
**Core Concept**
Papilloedema is the swelling of the optic disc due to increased intracranial pressure (ICP), which can be caused by various conditions such as brain tumors, hydrocephalus, or venous sinus thrombosis. This condition can lead to visual disturbances and is often a sign of an underlying serious medical condition.
**Why the Correct Answer is Right**
Papilloedema is characterized by the swelling of the optic disc due to the herniation of axons through the lamina cribrosa, leading to a loss of the normal cup-disc ratio. This is often accompanied by other signs such as blurred vision, headache, and nausea. The increased ICP can also lead to other symptoms such as tinnitus, dizziness, and vomiting.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because papilloedema is not typically associated with a decreased visual acuity, although it can lead to visual field defects and loss of peripheral vision.
**Option B:** This option is incorrect because papilloedema is not a common feature of glaucoma, which is characterized by increased intraocular pressure and optic nerve damage.
**Option C:** This option is incorrect because papilloedema is not typically associated with a normal cerebrospinal fluid (CSF) pressure, as increased ICP is a hallmark of this condition.
**Option D:** This option is incorrect because papilloedema is not typically associated with a normal optic disc, as the swelling of the optic disc is a characteristic feature of this condition.
**Clinical Pearl / High-Yield Fact**
Papilloedema can be a sign of a serious underlying medical condition, and it is essential to investigate and manage the underlying cause promptly to prevent further complications.
**Correct Answer: B. Papilloedema is not typically associated with glaucoma.**