Optic neuritis ME

Question 1

What is the primary symptom of optic neuritis?

Answer 1

Vision loss, often accompanied by pain.

Question 2

True or False: Optic neuritis is commonly associated with multiple sclerosis.

Answer 2

True

Question 3

Fill in the blank: The inflammation in optic neuritis primarily affects the ________ of the optic nerve.

Answer 3

myelin

Question 4

What age group is most commonly affected by optic neuritis?

Answer 4

Young adults, particularly between ages 20 and 40.

Question 5

List two common diagnostic tests used for optic neuritis.

Answer 5

Optical coherence tomography (OCT) and visual evoked potentials (VEP).

Question 6

What is the characteristic visual field defect in optic neuritis?

Answer 6

Central scotoma.

Question 7

Which autoimmune disorder is most frequently associated with optic neuritis?

Answer 7

Multiple sclerosis.

Question 8

What is the typical recovery time for visual function in a patient with optic neuritis?

Answer 8

Most patients recover within weeks to months, but some may have persistent deficits.

Question 9

True or False: Corticosteroids are commonly used to treat optic neuritis.

Answer 9

True

Question 10

What is the role of MRI in the evaluation of optic neuritis?

Answer 10

To identify lesions in the optic nerve and assess for underlying multiple sclerosis.

Question 11

Multiple choice: Which of the following is NOT a potential cause of optic neuritis? A) Viral infection B) Bacterial infection C) Diabetes D) Multiple sclerosis

Answer 11

C) Diabetes

Question 12

What is the term for the phenomenon where pain is experienced with eye movement in optic neuritis?

Answer 12

Ocular pain.

Question 13

Fill in the blank: The presence of ________ in the cerebrospinal fluid can support a diagnosis of multiple sclerosis in a patient with optic neuritis.

Answer 13

oligoclonal bands

Question 14

What is the typical age of onset for optic neuritis associated with multiple sclerosis?

Answer 14

Around 30 years of age.

Question 15

True or False: Optic neuritis can occur in both unilateral and bilateral forms.

Answer 15

True

Question 16

What is the significance of a relative afferent pupillary defect (RAPD) in the context of optic neuritis?

Answer 16

It indicates a defect in the afferent pathway of the affected eye.

Question 17

Multiple choice: Which type of visual field defect is most commonly seen in optic neuritis? A) Bitemporal hemianopia B) Homonymous hemianopia C) Central scotoma D) Peripheral field loss

Answer 17

C) Central scotoma

Question 18

What are two potential complications of untreated optic neuritis?

Answer 18

Permanent vision loss and increased risk of developing multiple sclerosis.

Question 19

Fill in the blank: The presence of ________ in the patient’s history may suggest a post-infectious cause of optic neuritis.

Answer 19

recent viral illness

Question 20

What is the relationship between optic neuritis and neuromyelitis optica (NMO)?

Answer 20

NMO can cause optic neuritis, often with more severe outcomes and bilateral involvement.

Question 21

True or False: The visual prognosis in optic neuritis is generally poor, with most patients experiencing significant vision loss.

Answer 21

False

Question 22

What is the primary mechanism of vision loss in optic neuritis?

Answer 22

Demyelination of the optic nerve.

Question 23

Multiple choice: Which of the following symptoms is least likely to be associated with optic neuritis? A) Color vision loss B) Photophobia C) Tinnitus D) Visual field loss

Answer 23

C) Tinnitus

Question 24

38-year-old woman decreased visual retro orbital pain worse than eye movement on the left side for the past four days. vision loss especially colour. Which one is the appropriate next investigation?

Answer 24

MRI
MRI is highly sensitive and specific assessing inflammatory changes in the optic nerve and helps to rule out structural lesions. It has predicting value MS in pt first time ON.

Question 25

38-year-old woman decreased visual retro orbital pain worse than eye movement on the left side for the past four days. vision loss especially colour. Which more likely to establish d(x) for her?

Answer 25

Visual evoked potentials.
For patients suspected ON MRI of brain is the initial investigation to consider . When it comes to accuracy vep!!!
Delay in latency with preserved waveforms in conventional VEP.