PERIPHERAL RETINAL DISEASES
The choroidal detachment presents as a smooth, bullous, orange-brown elevation of the retina and choroid, usually extending 360 degrees around the periphery in a lobular configuration. The ora serrata is visible without scleral depression.
The suprachoroidal space is normally virtual because the choroid is in close apposition to the sclera. As fluid accumulates, this space becomes real, and the choroid is displaced from its normal position. Fluid accumulation, either a serum-like liquid or blood, can also occur within the choroid, which is a spongy tissue.
As a sequela, linear areas of pigmented epithelium hypertrophy, called Verhoeff lines, indicate the posterior limits of the choroidal detachment after fluid reabsorption.
Choroidal detachment may occur in two forms: