What is a common sign of retinal detachment during ultrasound?

A common sign of retinal detachment observed during ultrasound is the separation between the retina and the underlying retinal pigment epithelium. This separation is a critical feature that indicates that the retina has moved away from its normal position, which can disrupt the function of the retina and lead to vision loss if not addressed promptly.

When the retina detaches, fluid accumulates subretinally, leading to this separation. The ultrasound findings typically reveal an elevated retina, which appears as an area of detachment, often showing a characteristic configuration compared to the attached retina, which remains smooth and adherent to the underlying structures. Identifying this separation is essential for diagnosis and timely intervention to prevent permanent visual impairment.

The other options do not reflect the typical sonographic findings associated with retinal detachment. For instance, thickening of the retina is more commonly associated with conditions like retinal edema rather than detachment. An increase in retinal vascularization would not directly indicate detachment and could suggest different pathologies. Lastly, an opaque appearance of the retina is not a reliable indicator of retinal detachment but could be seen in other pathological conditions, such as vitreous hemorrhage or other retinal diseases.