Retinal vascular occlusion is often described as a transient monocular vision loss lasting minutes with complete recovery; this event is best described as which of the following?

Retinal vascular occlusion is often described as a transient monocular vision loss lasting minutes with complete recovery; this event is best described as which of the following?

• A. Migraine with aura
• B. Acute conjunctivitis
• C. Transient ischemic attack (TIA)
• D. Stroke in evolution

Answer: (C)

Transient monocular vision loss that lasts only minutes and then fully recovers is a sign of transient ischemia in the retinal circulation. This fits a transient ischemic attack affecting the retina—often called amaurosis fugax—where brief occlusion of the retinal arteries causes temporary blindness with complete recovery as blood flow returns. It’s a warning that there may be carotid or vascular disease and a risk of future stroke, so it requires urgent vascular risk assessment and management. Migraine with aura can involve transient visual symptoms, but those are typically cortical and may include positive phenomena like flashing lights or zigzag lines, often with headache. Acute conjunctivitis causes eye irritation, redness, and discharge rather than true transient monocular blindness. A stroke in evolution produces persistent or progressively worsening neurological deficits, not a brief, complete recovery.

Transient monocular vision loss that lasts only minutes and then fully recovers is a sign of transient ischemia in the retinal circulation. This fits a transient ischemic attack affecting the retina—often called amaurosis fugax—where brief occlusion of the retinal arteries causes temporary blindness with complete recovery as blood flow returns. It’s a warning that there may be carotid or vascular disease and a risk of future stroke, so it requires urgent vascular risk assessment and management.

Migraine with aura can involve transient visual symptoms, but those are typically cortical and may include positive phenomena like flashing lights or zigzag lines, often with headache. Acute conjunctivitis causes eye irritation, redness, and discharge rather than true transient monocular blindness. A stroke in evolution produces persistent or progressively worsening neurological deficits, not a brief, complete recovery.