What is a specific clinical sign of active chorioretinal lesions?

Active chorioretinal lesions typically present with retinal edema as a specific clinical sign. This condition signifies inflammation and fluid accumulation within the retinal layers, indicating that the underlying chorioretinal pathology is currently active. Retinal edema can manifest as a thickening of the retina and can be observed during a thorough ophthalmic examination, especially through techniques such as indirect ophthalmoscopy or optical coherence tomography (OCT).

In contrast, retinal dysplasia is a developmental abnormality seen in the retina usually present from birth and not associated with active inflammatory processes. Corneal opacity refers to changes in the cornea, which would not be related to the state of the choroid or retina. Vitreous detachment may occur due to various factors but is not specifically indicative of active chorioretinal lesions. Thus, retinal edema stands out as the primary sign reflecting current inflammatory activity in the context of chorioretinal disease.