Ischemic Optic Neuropathies — Flashcards

Flashcard 1: AION is due to the interference in the circulation of the _____ artery supplying the anterior part of the optic nerve.

Answer: posterior ciliary

Flashcard 2: Hyperemic optic disc with telangiectatic (non-leaky on FFA) capillaries is suggestive of _____.

Answer: LHON

Flashcard 3: Multiple sclerosis may cause _____, resulting in sudden loss of vision and Marcus Gunn pupils

Answer: optic neuritis

Flashcard 4: Without treatment, patients with _____ arteritis are at high risk for blindness

Answer: giant cell (temporal)

Flashcard 5: Which type of Anterior Ischemic Optic Neuropathy (AION) is characterized by hyperemic disc edema?

Answer: NAION (Non-arteritic anterior ischemic optic neuropathy)

Extra: NAION presents with hyperemic disc edema. In contrast, AAION (Arteritic anterior ischemic optic neuropathy) typically presents with a chalky white (pale) disc edema and is associated with Giant Cell Arteritis.

Flashcard 6: _____ is a condition of abnormal myelination of the nerve fibers of the retina, where myelination continues beyond lamina cribrosa and spreads into the retina beyond the optic disc.

Answer: Medullated nerve fibers (optic disc medullation)

Flashcard 7: _____ sign is seen in optic nerve hypoplasia

Answer: Double-ring

Flashcard 8: Hyperemic optic disc with telangiectatic (non-leaky on FFA) capillaries is suggestive of _____.

Answer: LHON

Flashcard 9: Early stage of papilledema is characterised by obscuration of disc margins (_____ margin first), and absence of spontaneous venous pulsations of the disc

Answer: nasal

Flashcard 10: Established papilledema may lead to a _____ or dome-shaped disc, and appearance of a macular fan

Answer: mushroom