Choroidal Detachment
In general, choroidal detachments can be categorized as “serous” (fluid filled), or “hemorrhagic” (blood filled). Serous choroidal detachments are typically associated with a low pressure in the eye and are usually only mildly uncomfortable. In contrast, hemorrhagic choroidal detachments are commonly painful, and often associated with a high intraocular pressure. Serous choroidal detachments most commonly occur in the setting of low intraocular pressure after eye surgery. Inflammation, trauma, cancer, and certain medications can also cause a serous choroidal detachment to occur. In some patients, especially in those who are far-sighted, serous choroidal detachments can occur spontaneously.
In contrast, hemorrhagic choroidal detachments occur when a choroidal blood vessel bursts and suddenly fills the space between the choroid and the sclera with blood. This most often occurs during surgery but can occur following surgery, and is more frequent in older patients with a history of hardening of the arteries, or who use medications to thin their blood. Some eyes with low pressure following glaucoma surgery can develop serous or hemorrhagic choroidal detachment months or years following this surgery.

Treatment for choroidal detachments can vary but are generally treated with topical medications, such as eye drops, that help reduce inflammation and dilate the pupil. Small postoperative choroidal detachments often heal on their own a few days after surgery.
