## Core Concept
Central retinal artery occlusion (CRAO) is a condition characterized by the sudden blockage of the central retinal artery, leading to ischemia of the inner retinal layers. This condition typically presents with severe, painless vision loss in one eye. The diagnosis and management of CRAO require urgent attention to attempt salvage of the affected eye.

## Why the Correct Answer is Right
The correct answer, ., relates to features not typically associated with CRAO. In CRAO, common findings include a pale retina with a "cherry-red spot" in the macula due to the preserved thickness of the retina and the presence of a normal choroidal circulation under the fovea. The condition usually results in severe vision loss, often to the level of no light perception.

## Why Each Wrong Option is Incorrect
- **Option A:** Typically, a feature of CRAO; the blockage leads to ischemia of the inner retinal layers.
- **Option B:** Also a feature; the retina appears pale due to edema and ischemia.
- **Option C:** This option might describe a feature; however, without specifics, we infer based on common presentations like sudden vision loss and the presence of a cherry-red spot.
- **Option D:** Usually not a feature; CRAO characteristically presents with a lack of retinal hemorrhages because the ischemia primarily affects the inner retinal layers.

## Clinical Pearl / High-Yield Fact
A key clinical pearl in CRAO is the urgency of treatment to salvage vision. The "cherry-red spot" sign is pathognomonic and helps differentiate CRAO from other causes of sudden vision loss. Despite the urgency, most treatments have limited efficacy if initiated late.

## Correct Answer: D.